A、B、C、D分别是Na2SO4溶液、稀盐酸、Na2CO3溶

更新 2022-09-03
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A、B、C、D分别是Na₂SO₄溶液、稀盐酸、Na₂CO₃溶液和BaCl₂溶液中的一种，已知A和B反应有白色沉淀生成，在沉淀中加入D溶液，沉淀不溶解。A和C反应有白色沉淀生成，在沉淀中加入D溶液，沉淀全部溶解．则四种溶液分别是：
A、 B、 C、 D、。

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