Al(OH)₃ + HCl = Al(OH)₂Cl + H₂O
Al(OH)₃ + H⁺ + Cl⁻ = Al(OH)₂⁺ + Cl⁻ + H₂O
Al(OH)₃ + H⁺ = Al(OH)₂⁺ + H₂O