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【题目】将氯水滴入KI溶液中,用力振荡,再注入CCl4,振荡后静置,看到的现象为( )

A.液体呈紫红色

B.液体分两层,上层为紫色,下层接近无色

C.液体分两层,上层接近无色,下层紫色

D.液体无色

【答案】C

【解析】将氯水滴入KI溶液中发生如下反应:Cl2+2KI=2KClI2,CCl4将生成的碘萃取出来,同时CCl4的密度大于水的密度,故溶液的下层呈紫色,C项正确。

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