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2P + 3Cl₂ = 2PCl₃ PCl₃ + 5KOH = K₂HPO₃ + 3KCl + 2 H₂O 5K₂HPO₃ + 2KMnO₄ + 8H₂SO₄ = 5H₃PO₄ + 2MnSO₄ + 6K₂SO₄ + 3H₂O 2P + 5Cl₂ = 2PCl₅ 3PCl₅ + P₂O₅ = 5POCl₃ POCl₃ + 6KOH = K₃PO₄ + 3KCl + 3H₂O