С + O₂ = CO₂
CO₂ + Ca(OH)₂ = CaCO₃ + H₂O
CaCO₃ = CaO + CO₂
CaO + H₂O = Ca(OH)₂
3Ca(OH)₂ + 2H₃PO₄ = Ca₃(PO₄)₂ + 6H₂O
Ca₃(PO₄)₂ = P₂O₅ + 3CaO
С + O₂ = CO₂
CO₂ + Ca(OH)₂ = CaCO₃ + H₂O
CaCO₃ = CaO + CO₂
CaO + H₂O = Ca(OH)₂
3Ca(OH)₂ + 2H₃PO₄ = Ca₃(PO₄)₂ + 6H₂O
Ca₃(PO₄)₂ = P₂O₅ + 3CaO