一包白色粉末，由 CuSO4、Na2CO3、BaCl2、Na2SO4、NaOH 中的一种或几种组成。为探究其组成，进行如下实验：⑴取少量白色粉末，向其中加入足量的水，充分搅拌后过滤，得到白色沉淀和无色_刷题宝

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一包白色粉末，由 CuSO₄、Na₂CO₃、BaCl₂、Na₂SO₄、NaOH 中的一种或几种组成。为探究其组成，进行如下实验：

⑴取少量白色粉末，向其中加入足量的水，充分搅拌后过滤，得到白色沉淀和无色滤液。

⑵取实验(1)滤出的白色沉淀，向其中加入足量的稀硫酸，产生无色气体，沉淀不溶解。则原白色粉末中一定含有____。

⑶为进一步探究原白色粉末的组成，取实验(1)得到的滤液，向其中通入二氧化碳，产生白色沉淀，则可推断原白色粉末中一定还含有____。

上一题下一题 0.0难度选择题更新时间:2018-06-23 09:08:33

答案(点此获取答案解析）

Na₂CO₃、BaCl₂,NaOH

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