1. 4P + 5O₂ → 2P₂O₅
2. P₂O₅ + 6NaOH → 2Na₃PO₄ + 3H₂O
3. 2Na₃PO₄ + 3CaCl₂ → Ca₃(PO₄)₂ + 6NaCl
4. Ca₃(PO₄)₂ + 3H₂SO₄ → 3CaSO₄ ↓ + 2H₃PO₄
5. 2H₃PO₄ + 2Al → 2AlPO₄ + 3H₂
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Answers & Comments
1. 4P + 5O₂ → 2P₂O₅
2. P₂O₅ + 6NaOH → 2Na₃PO₄ + 3H₂O
3. 2Na₃PO₄ + 3CaCl₂ → Ca₃(PO₄)₂ + 6NaCl
4. Ca₃(PO₄)₂ + 3H₂SO₄ → 3CaSO₄ ↓ + 2H₃PO₄
5. 2H₃PO₄ + 2Al → 2AlPO₄ + 3H₂