请在 下方输入 要搜索的题目:

In the experiment of purification of sodium chloride, when barium chloride is added into the solution, white precipitate is formed, which indicates the existence of sulfate ion in the solution.


A、正确;
B、错误

发布时间:2025-11-05 21:04:08
推荐参考答案 ( 由 题搜搜 官方老师解答 )
答案:错误
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