当CH3COO-未水解时:c(CH3COO-)=c(Na+)
CH3COONa溶液中
②、物料守恒
c(水解离子)始=c(水解离子)平+水解生成的相应微粒浓度之和
水解
CH3COO- + CH3COOH
c(CH3COO-)始=c(CH3COO-)平+c(CH3COOH)
c(CH3COO-)始=c(Na+)=c(CH3COO-)平+c(CH3COOH)
c(Na+)=c(CH3COO-) +c(CH3COOH)
NaHCO3溶液中
c(Na+)=c(HCO3-)+c(CO32-)+c(H2CO3)