1) NaOH + HCl = NaCl + H₂O
2) 2Na + Cl₂ = 2NaCl
3) Na₂SO₄ + BaCl₂ = BaSO₄↓ + 2NaCl
1) Li₂O + CO₂ = Li₂CO₃
2) 2LiHCO₃ →t°→ Li₂CO₃ + CO₂ + H₂O
3) 2LiOH + CO₂ = 2Li₂CO₃ + H₂O
