P-cпоa3p2-p2o5-h3po4-ca3(po4)2-cacl2-cas-h2s-khs !

4P + 5O₂ = 2P₂O₅
P₂O₅ + 3H₂O = 2H₃PO₄
2H₃PO₄ + 3Ca(OH)₂ = Ca₃(PO₄)₂ + 6H₂O
Ca₃(PO₄)₂ + 6LiCl = 2Li₃PO₄↓ + 3CaCl₂
CaCl₂ + H₂S = HCl↑ + CaS
CaS + H₂CO₃ = H₂S + CaCO₃↓
2H₂S + K₂O = 2KHS + H₂O