1. Ca + 2H₂O → Ca(OH)₂ + H₂
2. Ca(OH)₂ + Na₂CO₃ → СaCO₃ + 2NaOH
3. CaCO₃ → CaO + CO₂
4. CaO + CO₂ → CaCO₃
5. CaCO₃ → CO₂ + Н₂О
1. Ca + 2H₂O → Ca(OH)₂ + H₂
2. Ca(OH)₂ + Na₂CO₃ → СaCO₃ + 2NaOH
3. CaCO₃ → CaO + CO₂
4. CaO + CO₂ → CaCO₃
5. CaCO₃ → CO₂ + Н₂О