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物质的分离、提纯

> 为提纯下列物质（括号内为杂质），选用的试剂和分离方法都正确的是（）物质试剂分离方法 ① 硝酸钾（氯化钠）蒸馏水降温结晶 ② 二氧化碳（氯化氢）饱和氢氧化钠溶液洗气 ③ 乙醇（少量水）生石灰蒸馏 A．①② B．①③ C．只有③ D．②③

问题：

发布时间：2024-09-09

为提纯下列物质（括号内为杂质），选用的试剂和分离方法都正确的是（）

物质
试剂
分离方法

①
硝酸钾（氯化钠）
蒸馏水
降温结晶

②
二氧化碳（氯化氢）
饱和氢氧化钠溶液
洗气

③
乙醇（少量水）
生石灰
蒸馏

A．①② B．①③ C．只有③ D．②③

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