CrCl3 + H2O = CrOHCl2 + HCl кислая (ph < 7)
Cr³⁺ + H2O = CrOH²⁺ + H⁺
Na2SO3 + H2O = NaHSO3 + NaOH щелочная (ph > 7)
SO3²⁻ + H2O = HSO3⁻ + OH⁻
(NH4)2SO4 + H2O = (NH4)HSO4 + NH4OH слабощелочная (ph > 7)
SO4²⁻ + H2O = HSO4⁻ + OH⁻
Li2S + H2O = LiHS + LiOH щелочная (ph > 7)
S²⁻ + H2O = HS⁻ + OH⁻