A:c(Na+)+ c(H+)= c(OH-)+ c(CH3COO-)
B:c(Na+)>c(CH3COO-)>c(H+)>c(OH-)
C:c(OH-)= c(H+)+ c(CH3COOH)
D:c(CH3COOH)+ c(CH3COO-)= c(Na+)