Ca + 2H₂O = Ca(OH)₂ + H₂
Ca(OH)₂ + 2HNO₃ = Ca(NO₃)₂ + 2H₂O
Ca(NO₃)₂ + K₂CO₃ = CaCO₃ + 2KNO₃
CaCO₃ + CO₂ + H₂O = Ca(HCO₃)₂
Ca(HCO₃)₂ = CaCO₃ + H₂O + CO₂
Ca + 2H₂O = Ca(OH)₂ + H₂
Ca(OH)₂ + 2HNO₃ = Ca(NO₃)₂ + 2H₂O
Ca(NO₃)₂ + K₂CO₃ = CaCO₃ + 2KNO₃
CaCO₃ + CO₂ + H₂O = Ca(HCO₃)₂
Ca(HCO₃)₂ = CaCO₃ + H₂O + CO₂