Răspuns:
2Fe + O₂ → 2FeO
4Fe + 3O₂ → 2Fe₂O₃
4Na + O₂ → 2Na₂O
2K + Cl₂ → 2KCl
MgO + H₂O → Mg(OH)₂
2Al + 3I₂ → 2AlI₃
Na₂O + H₂O → 2NaOH
2Al + 3S → Al₂S₃
Al₂O₃ + 3H₂O → 2Al(OH)₃
2H₂ + O₂ → 2H₂O
CO₂ + H₂O ⇌ H₂CO₃
H₂ + Cl₂ → 2HCl
P₄ + 3O₂ → 2P₂O₃
P₄ + 5O₂ → 2P₂O₅
Ca + Cl₂ → CaCl₂
SO₂ + H₂O ⇌ H₂SO₃
SO₃ + H₂O → H₂SO₄
P₂O₃ + 3H₂O → 2H₃PO₃
P₂O₅ + 3H₂O → 2H₃PO₄
2SO₂ + O₂ → 2SO₃
-Mihai