A . pH=5.6的CH3COOH与CH3COONa混合溶液中:c(Na+)<c(CH3COO﹣)
B . 浓度均为0.1 mol•L﹣1的CH3COOH和CH3COONa溶液等体积混合后:c(CH3COO﹣)﹣c(CH3COOH)=2[c(H+)﹣c(OH﹣)]
C . 将pH=a的醋酸稀释为pH=a+1的过程中,c(CH3COOH)/c(H+)增大
D . 常温下0.1 mol•L﹣1的下列溶液①NH4Al(SO4)2 , ②NH4Cl,③NH3•H2O,④CH3COONH4中,c(NH4+)由大到小的顺序是:①>②>④>③