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Vampire1234
@Vampire1234
July 2022
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Cоставьте уравнения реакций соответствующим превращениям P - P2O5 - H3PO4 - Ca(PO4)2 - H3PO4 - Ca(H2 PO4)2
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dmitry314
1) 4P + 5O₂ -------t-------> 2P₂O₅
2) P₂O₅ + 3H₂O -> 2H₃PO₄
3) 2H₃PO₄ + 3Ca(OH)₂ -> Ca₃(PO₄)₂↓ + 6H₂O
4) Ca₃(PO₄)₂ + 3H₂SO₄ -> 3CaSO₄↓ + 2H₃PO₄
5) 4H₃PO₄ + 2Ca -> 2Ca(H₂PO₄)₂ + 2H₂↑
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Answers & Comments
2) P₂O₅ + 3H₂O -> 2H₃PO₄
3) 2H₃PO₄ + 3Ca(OH)₂ -> Ca₃(PO₄)₂↓ + 6H₂O
4) Ca₃(PO₄)₂ + 3H₂SO₄ -> 3CaSO₄↓ + 2H₃PO₄
5) 4H₃PO₄ + 2Ca -> 2Ca(H₂PO₄)₂ + 2H₂↑