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【題目】在未知液中加入AgNO3溶液有白色沉淀生成,加入稀硝酸后,沉淀部分溶解,有無色無味的氣體生成,將氣體通入澄清石灰水,石灰水變渾濁,由此判斷水溶液中可能含有( )

A.Cl、SO42- B.Cl、NO3

C.Cl、CO32- D.Cl、OH

【答案】C

【解析】加入硝酸后沉淀部分溶解,且產生無色無味能使澄清的石灰水變渾濁的氣體,則該溶液中含有ClCO32-,C項正確。

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