除去粗盐溶液中的Ca2+、Mg2+、SO42﹣等杂质，需加入NaOH、Na2CO3、BaCl2和盐酸，加入顺序正确的是_刷题宝

题干

除去粗盐溶液中的Ca²⁺、Mg²⁺、SO₄²^﹣等杂质，需加入NaOH、Na₂CO₃、BaCl₂和盐酸，加入顺序正确的是（）

A：NaOH、Na₂CO₃、BaCl₂、HCl

B：Na₂CO₃、BaCl₂、HCl、NaOH

C：BaCl₂、HCl、NaOH、Na₂CO₃

D：NaOH、BaCl₂、Na₂CO₃、HCl

上一题下一题 0.0难度选择题更新时间:2018-05-02 05:03:23

答案(点此获取答案解析）

D

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