[题目]某水体中含有较多的泥沙及其他悬浮物.下列物质中不能用来净化此水的是( )A. KCl B. Fe2(SO4)3C. KAl(SO4)2 D. FeCl3 题目和参考答案——青夏教育精英家教网—

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【题目】某水体中含有较多的泥沙及其他悬浮物，下列物质中不能用来净化此水的是( )

A. KCl B. Fe2(SO4)3

C. KAl(SO4)2 D. FeCl3

【答案】A

【解析】Fe2(SO4)3、FeCl3可产生Fe(OH)3胶体，能用于净水，KAl(SO4)2溶液可产生Al(OH)3胶体，也可用于净水。

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