Al → Al₂O₃ → AlCl₃ → Al(OH)₃ → Al₂O₃→ KAlO₃
4Al +3O₂= 2Al₂O₃
Al₂O₃+6HCI = 2AlCl₃+3H₂O
Al₂O₃+6H⁺+6CI⁻ = 2Al³⁺+6Cl⁻+H₂O
Al₂O₃+6H⁺ = 2Al³⁺++H₂O
AlCl₃+3NaOH = Al(OH)₃↓+3NaCI
Al³⁺ +3Cl⁻+3Na⁺+3OH⁻ = Al(OH)₃↓+3Na⁺ +3CI⁻
Al³⁺ +3OH⁻ = Al(OH)₃↓
Al(OH)₃ = Al₂O₃+H₂O
Al₂O₃+2KOH= 2KAlO₃+H₂O
Al₂O₃+2K⁺ +2OH⁻ = 2K⁺ + 2AlO₃⁻+H₂O
Al₂O₃+2OH⁻ =2AlO₃⁻+H₂O