Hydrolysis Reaction

pH

Al³⁺ + H₂O ↔ Al(OH)²⁺ + H⁺

5.5

2Al³⁺ + 2H₂O ↔ ${\text{Al}}_{\text{2}}{\left(\text{OH}\right)}_{\text{2}}^{\text{4}+}$ + 2H⁺

7.7

6Al³⁺ + 15H₂O ↔ ${\text{Al}}_{\text{6}}{\left(\text{OH}\right)}_{\text{15}}^{\text{3}+}$ + 15H⁺

47.0

Al³⁺ + 2H₂O ↔ $\text{Al}{\left(\text{OH}\right)}_2^{\text{1}+}$ + 2H⁺

9.9

Al³⁺ + 3H₂O ↔ Al(OH)₃ + 3H⁺

15.6

Al³⁺ + 4H₂O ↔ $\text{Al}{\left(\text{OH}\right)}_4^{-}$ + 4H⁺

23.0