1) CaI₂ + Na₂CO₃ → CaCO₃↓ + 2NaI
2) CaCO₃ → CO₂ + CaO
3) CO₂ + K₂O → K₂CO₃
4) K₂CO₃ + CO₂ + H₂O → 2 KHCO₃
5) KHCO₃ + KOH → H₂O + K₂CO₃
Br₂ + H₂O + KNO₂ → 2HBr + KNO₃
1) CaI₂ + Na₂CO₃ → CaCO₃↓ + 2NaI
2) CaCO₃ → CO₂ + CaO
3) CO₂ + K₂O → K₂CO₃
4) K₂CO₃ + CO₂ + H₂O → 2 KHCO₃
5) KHCO₃ + KOH → H₂O + K₂CO₃
Br₂ + H₂O + KNO₂ → 2HBr + KNO₃