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碘化亚铜与氨水反应的现象
更新时间: 2020-07-14 00:00:00  

硫酸铜溶液中加入浓氨水,首先析出浅蓝色的碱式硫酸铜沉淀,氨水过量时此沉淀溶解,同时形成四氨合铜络离子。铜氨络合物较稳定,不与稀碱液作用。而且可以利用它在乙醇溶液中溶解度很小的特点来获得硫酸四氨合铜的晶体。

但如果络离子所处的络合平衡在一定条件下被破坏,随着络合平衡的移动,铜氨络离子也要离解。

关键词: 氨水 反应 现象

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