下列表述正确的是( )
A、0.1 mol/L的(NH4)2SO4溶液:c(SO42﹣)>c(NH4+)>c(H+)>c(OH﹣)
B、0.1 mol/L的NaHCO3溶液:c(Na+)=c(HCO3﹣)+c(H2CO3)+2c(CO32﹣)
C、将0.2 mol/L NaA溶液和0.1 mol/L盐酸等体积混合所得溶液:c(Na+)+c(H+)=c(A﹣)+c(Cl﹣)
D、0.02mol/L CH3COOH溶液和0.01 mol/L NaOH溶液等体积混合所得溶液:2c(H+)+c(CH3COOH)=c(CH3COO﹣)+2c(OH﹣)