4Al + 3O₂ = 2Al₂O₃
Al₂O₃ + 6HCl = 2AlCl₃ + 3H₂O
AlCl₃ + 3KOH = Al(OH)₃ + 3KCl
2Al(OH)₃ + 3H₂SO₄ = Al₂(SO₄)₃ + 6H₂O
Al₂(SO₄)₃ + 6NaOH = 2Al(OH)₃ + 3Na₂SO₄
2Al(OH)₃ = Al₂O₃ +3H₂O (t)
C + O₂ = CO₂
CO₂ + H₂O = H₂CO₃
H₂CO₃ + 2KOH = K₂CO₃ + 2H₂O
K₂CO₃ + CaCl₂ = CaCO₃ + 2KCl
CaCO₃ = CaO + CO₂ (t)