下列离子能在pH=2的水溶液中大量共存的是  A.SO42-、NO3-、K+、OH

下列离子能在pH=2的水溶液中大量共存的是

 ASO42NO3K+OH            BHCO3ClSO42Na+

 CClNO3K+Na+               DNH4+ClOHK+

答案

C

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