下列化学用语正确的是(    )     A.H2SO的电离方程式:H2SO32H++SO32-

下列化学用语正确的是(   

    A.H2SO的电离方程式:H2SO32H++SO32-

    B.NaHSO4在水溶液中的电离方程式:NaHSO4=Na++H++SO42-

C.Na2CO3水解CO32-+2H2O    H2CO3+2OH-

D.NH4Cl的水解NH4++H2O =  NH3.H2O+H+

答案

B

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