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如何检验溶液中是否含三价铁离子

更新时间: 2020-10-13 00:00:00     

检验溶液中是否含三价铁离子的方法:

1、溶液呈棕黄色;

2、加入苯酚溶液呈显紫红色络合物;

3、加入氢氧化钠溶液出现红褐色沉淀;

4、三价铁离子与硫氰根离子生成血红色具有不同组成的络离子,碱能分解络合物,生成氢氧化三铁沉淀。

关键词: 如何 检验 溶液 是否 离子

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