Na₂O + H₂O → 2NaOH
2NaOH + H₂CO₃ → Na₂CO₃ + 2H₂O
Na₂CO₃ + 2HCl → 2NaCl + CO₂↑ + H₂O
CO₂ + BaO → BaCO₃
BaCO₃ →t→ BaO + CO₂
Na₂O + H₂O → 2NaOH
2NaOH + H₂CO₃ → Na₂CO₃ + 2H₂O
Na₂CO₃ + 2HCl → 2NaCl + CO₂↑ + H₂O
CO₂ + BaO → BaCO₃
BaCO₃ →t→ BaO + CO₂