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如何鉴别氯化铁和氯化亚铁溶液

更新时间: 2020-10-13 00:00:00     

鉴别氯化铁和氯化亚铁溶液的方法:

看颜色,氯化铁呈黄色,氯化亚铁呈浅绿色;滴加KSCN即硫氰化钾溶液,溶液变成血红色的是氯化铁,氯化亚铁无变化;滴加氢氧化钠等强碱溶液,出现红褐色沉淀的是氯化铁,出现白色沉淀的是氯化亚铁;滴加铁氰化钾或亚铁氰化钾溶液,氰化钾只与氯化亚铁反应,亚铁氰化钾只与氯化铁反应,反应现象均为生成蓝色沉淀。

关键词: 如何 鉴别 氯化 溶液

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