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85问答库 > 用浓NAOH如何鉴别出氨水，mgcl2.alcl3.cucl2.fecl3.nh4cl?

用浓NAOH如何鉴别出氨水，mgcl2.alcl3.cucl2.fecl3.nh4cl?

谢谢

2025-04-07 11:55:19

推荐回答（1个）

回答1：

有2种不用鉴别，看颜色黄色的是FeCl3 蓝色的是CuCl2 然后把NaOH加进其他4种马上有刺激性气味产生的是氨水有白色沉淀的是MgCl2 无现象，但加热后有刺激性气味的是NH4Cl 有白色沉淀，但加过量NaOH后沉淀消失的是AlCl3

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