Răspuns:
1.
C + O₂ → CO₂
CO₂ + H₂O ⇌ H₂CO₃
2.
NaOH + H₂SO₄ → Na₂SO₄ + H₂O
Cu(OH)₂ → CuO + H₂O
Al(OH)₃ + 3HCl → AlCl₃ + 3H₂O
-Mihai
