现有三种无色溶液已知它们分别是氯化钡氯化钠和碳酸钠选用一种试剂只取一次溶液即可将它们区别出来这种试剂是 A稀硫酸 B稀 Template




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tomski现有三种无色溶液已知它们分别是氯化钡氯化钠和碳酸钠选用一种试剂只取一次溶液即可将它们区别出来这种试剂是 a稀硫酸 b稀 coloring