题目内容
在水溶液中能大量共存的一组离子是( )
2021-08-31
A.Fe2+、H+、ClO-、Cl-
B.K+、Cu2+、OH-、NO3-
C.NH4+、Na+、Br-、SO2-4
D.Mg2+、H+、SiO2-3、SO2-4
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