题目:
下列表达不正确的是( )
A.NaHS在水中的电离方程式为:NaHS═Na++HS-和HS-═H++S2-
B.同物质的量浓度的氨水和盐酸反应至中性时所用体积:V(NH3•H2O)>V(HCl)
C.Na2SO3溶液中:c(H+)+c(HSO3-)+2c(H2SO3)=c(OH-)
D.同浓度的下列溶液中,c(CH3COO-)的大小:CH3COONa>CH3COONH4>CH3COOH
答案:
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