25℃时，下列溶液中有关微粒的物质的量浓度关系错误的是
A. pH=2的HA溶液与pH=12的MOH溶液以任意比混合c(H+) + c(M+)＝c(OH－) + c(A－)
B. Na2CO3溶液：c(OH－)＝c(HCO－3)＋c(H+)＋2c(H2CO3）
C. 室温下pH=7的CH3COOH与CH3COONa的混合液中离子的浓度大小顺序为：
c(Na+)= c(CHCOO－)> c(H+)= c(OH－)
D. pH=4的NaHA溶液：c(HA－)＞c(H+)＞c(H2A)＞c(A2－)
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