</span></section><p data-pm-slice="0 0 []"><span style="font-family: 宋体;"><span leaf=""><br></span></span></p><p data-pm-slice="0 0 []"><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">过氧化物中都含过氧键（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">−</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">），其中每个氧原子上都有两对孤电子对，使这两个氧原子之间的斥力增加，共价键易断开，所以含过氧键的物质性质活泼。</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><o:p></o:p></span></p><p><span style="font-family: 宋体;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">下面节选该讲座的一个片段。</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><o:p></o:p></span></p><p><span style="font-family: 宋体;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">工业上以重晶石</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">（主要成分为</span></span></span><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">BaSO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">为原料先制备</span></span></span><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">Ba(NO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">)</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">，</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">继续制成</span></span></span><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">BaO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">，</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">最后得到</span></span></span><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">溶液。</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><o:p></o:p></span></p><p><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><br></span></span></p><p><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">1</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">．制备</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">Ba(NO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">)</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><o:p></o:p></span></p><section nodeleaf=""><span class="wxart_image" wx-style="display:inline-block;width: 433px;height: auto !important;">
</span></section><p><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">1</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">）途径</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">1</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">的第一步反应为</span></span></span><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">BaSO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;"> + 4C = BaS + 4CO</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">（条件：高温）。结合下图，</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">该反应的</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">Δ</span></span><i><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span></i></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">和</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">Δ</span></span><i><span leaf=""><span textstyle="" style="font-size: 16px;">S</span></span></i></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">判断正确的是</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">______</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span></p><section nodeleaf=""><span class="wxart_image" wx-style="display:inline-block;width: 292px;height: auto !important;">
</span></section><p><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">A</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">．</span></span></span><span lang="EN-US" style="font-family: "Cambria Math", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">△</span></span></span><i><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span></span></i><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">>0</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">，</span></span></span><span lang="EN-US" style="font-family: "Cambria Math", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">△</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">S>0</span></span><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><o:p></o:p></span></p><p><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">B</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">．</span></span></span><span lang="EN-US" style="font-family: "Cambria Math", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">△</span></span></span><i><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span></span></i><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"><0</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">，</span></span></span><span lang="EN-US" style="font-family: "Cambria Math", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">△</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">S>0</span></span><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><o:p></o:p></span></p><p><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">．</span></span></span><span lang="EN-US" style="font-family: "Cambria Math", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">△</span></span></span><i><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span></span></i><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">>0</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">，</span></span></span><span lang="EN-US" style="font-family: "Cambria Math", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">△</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">S<0</span></span><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><o:p></o:p></span></p><p><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">D</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">．</span></span></span><span lang="EN-US" style="font-family: "Cambria Math", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">△</span></span></span><i><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span></span></i><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"><0</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">，</span></span></span><span lang="EN-US" style="font-family: "Cambria Math", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">△</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">S<0</span></span><o:p></o:p></span></p><p><span style="font-family: 宋体;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">BaS</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">可溶于水。在用硝酸溶解</span></span></span><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">BaS</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">时，可能产生的污染性气体有</span></span></span><u><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span></span></u><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">、</span></span></span><u><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span></span></u><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><o:p></o:p></span></p><p><span style="font-family: 宋体;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">298K</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">时，</span></span></span><i><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">K</span></span></span></i><sub><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">sp</span></span></span></sub><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">(BaCO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">) = 5.1×10</span></span></span><sup><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">−</span></span></span></sup><sup><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">9</span></span></span></sup><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">，</span></span></span><i><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">K</span></span></span></i><sub><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">sp</span></span></span></sub><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">(BaSO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">) =1.1×10</span></span></span><sup><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">−</span></span></span></sup><sup><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">10</span></span></span></sup><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">。计算途径</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">中</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">BaSO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">转化为</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">BaCO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">的平衡常数</span></span></span><i><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">K</span></span></span></i><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><o:p></o:p></span></p><p><span style="font-family: 宋体;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">）综合以上的分析，设计以重晶石为原料制备</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">Ba(NO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">)</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">的物质转化路线。</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><o:p></o:p></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">答案：</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><o:p></o:p></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">1</span></span></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">A</span></span></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><o:p></o:p></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">S</span></span><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span leaf=""><span textstyle="" style="font-size: 16px;">NO</span></span><o:p></o:p></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">2.16</span></span><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span></span></p><section nodeleaf=""><span class="wxart_image" wx-style="display:inline-block;width: 501px;height: auto !important;">
</span></section><p><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><br></span><o:p></o:p></span></p><p><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">．由</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">Ba(NO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">)</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">制</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">BaO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">，流程如下：</span></span></span></p><section nodeleaf=""><span class="wxart_image" wx-style="display:inline-block;width: 253px;height: auto !important;">
</span></section><p><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">已知</span></span><span leaf=""><span textstyle="" style="font-size: 16px;">硝酸钡</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">600℃</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">时热解可得到</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">BaO</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><o:p></o:p></span></p><p><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">1</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">）步骤</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">I</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">中观察到有红棕色气体产生，写出相应的化学方程式。</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><o:p></o:p></span></p><p><span style="font-family: 宋体;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">）在硬质试管中加热硝酸钡晶体使之分解，再把带火星的木条插入其中，木条复燃。该现象</span></span><span leaf=""><span textstyle="" style="font-size: 16px;">能否证明</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">NO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">对木条复燃助燃的作用</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">？说出你的理由。</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><o:p></o:p></span></p><p><span style="font-family: 宋体;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">）为提高步骤</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">Ⅱ</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">的反应转化率，可采取的措施有哪些</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">?</span></span><o:p></o:p></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">答案：</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><o:p></o:p></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">1</span></span></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">2Ba(NO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">)</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;"> = 2BaO +4NO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">↑ + O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">↑</span></span><span style="font-family: 宋体;"><span leaf="" data-pm-slice="1 1 [" para",{"tagname":"p","attributes":{"style":"margin-bottom:="" 0px;"},"namespaceuri":"http:="" www.w3.org="" 1999="" xhtml"},"node",{"tagname":"span","attributes":{"style":"font-family:="" 宋体;"},"namespaceuri":"http:="" xhtml"}]"=""><span textstyle="" style="font-size: 16px;">（条件：</span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf="" data-pm-slice="1 1 [" para",{"tagname":"p","attributes":{"style":"margin-bottom:="" 0px;"},"namespaceuri":"http:="" www.w3.org="" 1999="" xhtml"},"node",{"tagname":"span","attributes":{"lang":"en-us","style":"font-family:="" \"times="" new="" roman\",="" serif;"},"namespaceuri":"http:="" xhtml"}]"=""><span textstyle="" style="font-size: 16px;">600℃）</span></span></span></span><o:p></o:p></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span><span leaf=""><span textstyle="" style="font-size: 16px;">能证明</span></span></span><span style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">在反应生成的混合气体中，</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">约占</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">1/5</span></span></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">，与</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">在空气中的含量基本一致，带火星的木条在空气中不能复燃，而在该混合气体中复燃，可知</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">NO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">有助燃作用。</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><o:p></o:p></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">）加压，降温，增大</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">浓度</span></span></span><span style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span lang="EN-US"><o:p></o:p></span></span></p><p><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><br></span></span></p><p><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">．由</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">BaO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">制</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">有多种方法。用过氧化钡和稀硫酸反应制得</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">，反应的化学方程式为：</span></span></span><u><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span></span></u><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">。过滤除去沉淀后，</span></span></span><u><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span></span></u><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">（填</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">“</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">减压蒸馏</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">”</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">或</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">“</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">常压蒸馏</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">”</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">）除去过量的水，即可得到一定浓度的</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><o:p></o:p></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">答案：</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">BaO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;"> + H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">SO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;"> = BaSO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">+ H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><o:p></o:p></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">减压蒸馏</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><o:p></o:p></span></p><p><span lang="EN-US" style="font-family:"Times New Roman",serif;"><span leaf=""><br></span></span></p><p><span lang="EN-US" style="font-family:"Times New Roman",serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span></span><span leaf=""><span textstyle="" style="font-size: 16px;">．为贮存、运输、使用的方便，工业上常将</span></span><span lang="EN-US" style="font-family:"Times New Roman",serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span leaf=""><span textstyle="" style="font-size: 16px;">转化为其他比较稳定的物质。</span></span><span lang="EN-US" style="font-family:"Times New Roman",serif;"><o:p></o:p></span></p><p><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span><span lang="EN-US" style="font-family:"Times New Roman",serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">1</span></span></span><span leaf=""><span textstyle="" style="font-size: 16px;">）固态的过碳酸钠晶体（其化学式为</span></span><span lang="EN-US" style="font-family:"Times New Roman",serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">2Na</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">CO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">·3H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span leaf=""><span textstyle="" style="font-size: 16px;">）具有</span></span><span lang="EN-US" style="font-family:"Times New Roman",serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">Na</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">CO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></sub></span><span leaf=""><span textstyle="" style="font-size: 16px;">和</span></span><span lang="EN-US" style="font-family:"Times New Roman",serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span leaf=""><span textstyle="" style="font-size: 16px;">的双重性质。下列物质不会使过碳酸钠晶体失效的是</span><span textstyle="" style="font-size: 16px; text-decoration-line: underline;"> </span><span textstyle="" style="font-size: 16px;">.</span></span></p><p><span lang="EN-US" style="font-family:"Times New Roman",serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">A</span></span></span><span leaf=""><span textstyle="" style="font-size: 16px;">．</span></span><span lang="EN-US" style="font-family:"Times New Roman",serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">MnO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span leaf=""><span textstyle="" style="font-size: 16px;">B</span></span></span><span leaf=""><span textstyle="" style="font-size: 16px;">．</span></span><span lang="EN-US" style="font-family:"Times New Roman",serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">S</span></span><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span leaf=""><br></span></span></p><p><span lang="EN-US" style="font-family:"Times New Roman",serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span></span><span leaf=""><span textstyle="" style="font-size: 16px;">．稀盐酸</span></span><span lang="EN-US" style="font-family:"Times New Roman",serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span leaf=""><span textstyle="" style="font-size: 16px;">D</span></span></span><span leaf=""><span textstyle="" style="font-size: 16px;">．</span></span><span lang="EN-US" style="font-family:"Times New Roman",serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">NaHCO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></sub><o:p></o:p></span></p><p><span style="font-family: 宋体;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">）过氧化尿素</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> [</span></span></span><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">CO(NH</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">)</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">·H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">]</span></span></span><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">是一种无毒无味的白色粉末</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">，其分子内存在的作用力是</span></span></span><u><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span></span></u><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">。（双选）</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><o:p></o:p></span></p><p><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">A</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">．</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">共价键</span></span></span><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span leaf=""><span textstyle="" style="font-size: 16px;">B</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">．</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">离子键</span></span></span><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span leaf=""><br></span></span></p><p><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">．</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">金属键</span></span></span><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span leaf=""><span textstyle="" style="font-size: 16px;">D</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">．</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">氢键</span></span></span><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><o:p></o:p></span></p><p><span style="font-family: 宋体;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="PT-BR" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">工业上可把</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">转化为过二硫酸钾。已知：</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">中的</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">原子被磺酸基（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf="" data-pm-slice="1 1 [" para",{"tagname":"p","attributes":{"style":"margin-bottom:="" 0px;","data-pm-slice":"0="" 0="" []"},"namespaceuri":"http:="" www.w3.org="" 1999="" xhtml"},"node",{"tagname":"span","attributes":{"lang":"en-us","style":"font-family:="" \"times="" new="" roman\",="" serif;"},"namespaceuri":"http:="" xhtml"}]"=""><span textstyle="" style="font-size: 16px;">−SO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">H）</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">取代可生成过硫酸</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">，</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">若一个</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">原子被取代，生成的是过一硫酸，分子式为</span></span></span><u><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span></span></u><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">；若二个</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span></span><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">原子被取代，生成的是过二硫酸，则过二硫酸钾的化学式为</span></span></span><u><span lang="EN-US" style="font-family: "Times New Roman", serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span></span></u><span style="font-family: 宋体;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;"><o:p></o:p></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">答案：（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">1</span></span></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">D</span></span><o:p></o:p></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">AD</span></span><o:p></o:p></span></p><p><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></span><span style="font-family: 宋体;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: red;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">SO</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">5</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span leaf=""><span textstyle="" style="font-size: 16px;">K</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">S</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></sub><span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><sub><span leaf=""><span textstyle="" style="font-size: 16px;">8</span></span></sub><o:p></o:p></span></p><p><span style="font-family: 宋体;color: rgb(0, 112, 192);"><span leaf=""><br></span></span></p><p><span style="font-family: 宋体;color: rgb(0, 112, 192);"><span leaf=""><span textstyle="" style="font-size: 16px;">《范汝广说化学》：</span></span></span><span lang="EN-US" style="font-family: "Times New Roman", serif;color: rgb(0, 112, 192);"><span leaf=""><span textstyle="" style="font-size: 16px;">18101846096</span></span></span><span style="font-family: 宋体;color: rgb(0, 112, 192);"><span leaf=""><span textstyle="" style="font-size: 16px;">（微信同号）</span></span></span></p><p style="display: none;"><mp-style-type data-value="3"></mp-style-type></p></div><p></p>
|手机版|LaTex|MST
( 沪ICP备18043106号-1 )
GMT+8, 2025-5-6 06:42
Powered by Discuz! X3.5
© 2001-2025 Discuz! Team.
主题式复习讲座5——《过氧化物：从结构到应用的深度探究》: 120353o2a0iqmef2r22kff.png