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钾离子检验有哪些方法

更新时间: 2020-09-26 00:00:00     

1、焰色反应:用铁丝在盐酸里浸泡一段时间,之后蘸取试液,通过蓝色钴玻璃观察,若有紫色火焰产生,就说明含有钾;

2、亚硝酸钴钠和钾混合,产生化学反应,生成亮黄色沉淀;

3、四笨硼酸钠和钾混合,产生化学反应,生成白色沉淀。

关键词: 离子 检验 哪些 方法

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