将SO2和X气体分别通入BaCl2溶液中,未见沉淀生成,若同时通入,有沉

SO2X气体分别通入BaCl2溶液中,未见沉淀生成,若同时通入,有沉淀生成,则X气体不可能

ACO2         BNH3           CCl2               DO2

答案

A

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