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