题干

下列实验设计和结论不相符的是

A:某无色无味气体通入澄清石灰水中,石灰水变浑浊,则该气体为CO2

B:某气体能使湿润的红色石蕊试纸变蓝,则该气体水溶液显碱性

C:某无色溶液中加入盐酸酸化的BaCl2溶液,产生白色沉淀,则该溶液中一定有SO42-

D:用可见光束照射某红褐色液体产生丁达尔现象,则该液体为胶体

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答案(点此获取答案解析)

C

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