(1)NaHCO3溶液: 水解 > 电离
HCO3- + H2O <==> H2CO3 + OH-
HCO3- <==> H+ + CO3^2-
H2O <==>H+ + OH-
[Na+] > [HCO3-] >[OH-] > [H+] > [CO3^2-]
(2)Na2CO3溶液:2步水解
CO3^2- + H2O <==> HCO3- + OH-
HCO3- + H2O <==>OH- + H2CO3
H2O <==>H+ + OH-
[Na+] >[CO3^2-] > [OH-] > [HCO3-] > [OH-] > [H+]