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如何检验Fe3和Fe2
更新时间: 2020-07-01 00:00:00  

检验3价铁离子和2价亚铁离子的方法:

氢氧化钠法:加入氢氧化钠溶液,通过沉淀物的状态判断,生成红褐色沉淀说明溶液中只有3价铁离子,生成灰绿色沉淀则说明溶液有2价亚铁离子和3价铁离子,生成白色絮状沉淀则说明溶液中只有亚铁离子。

关键词: 如何 检验 fe3 fe2

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