比较氯元素和硫元素的非金属性的相对强弱,下列方案中不能达到目的是(  )A.加热条件下,氯气和硫分

2025-03-15 07:47:40
推荐回答(1个)
回答1:

A.加热条件下,氯气和硫与铜反应,分别生成氯化铜、硫化亚铜,氯气可以将铜氧化为高价态铜,说明氯气的氧化性比硫强,故氯元素的非金属性比硫元素强,故A正确;
B.元素的气态氢化物越稳定,则元素的非金属性越强,故可以比较氯化氢和硫化氢的热稳定性比较硫元素、氯元素的非金属性强弱,故B正确;
C.往H2S溶液中通入氯气生成S,氯气是氧化剂、S是氧化产物,故氧化性氯气强于硫,故氯元素的非金属性比硫元素强,故C正确;
D.0.1mol/L氯化钠溶液呈中性,0.1mol/L硫化钠溶液呈碱性,说明HCl是强酸、H2S是弱酸,氢化物的酸性强弱不能比较中心元素的非金属性强弱,故D错误;
故选D.

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