Na2HPO4 + H2O = NaHPO4 + NaOH
Kr = Kw/K2 = 10^-14/ 6.2*10^-8 = 1.61*10^-7
h = (Kr/C)^1/2 = (1.61*10^-7 /0.02) = 2.84*10^-3 степень гидролиза ,
[OH-] = (Kr*C)^1/2 = (1.61*10^-7*0.02) = 5.67*10^-5
pH = 14 + lg[OH-] = 9.75
Na2HPO4 + H2O = NaHPO4 + NaOH
Kr = Kw/K2 = 10^-14/ 6.2*10^-8 = 1.61*10^-7
h = (Kr/C)^1/2 = (1.61*10^-7 /0.02) = 2.84*10^-3 степень гидролиза ,
[OH-] = (Kr*C)^1/2 = (1.61*10^-7*0.02) = 5.67*10^-5
pH = 14 + lg[OH-] = 9.75