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P→P₂O₅→H₃PO₄→Na₃PO₄→Ag₃PO₄
Cu→CuO→CuCl₂→Cu(OH)₂→CuO
P→P₂O₅→H₃PO₄→Na₃PO₄→Ag₃PO₄
Cu→CuO→CuCl₂→Cu(OH)₂→CuO
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Answers & Comments
2). P₂O₅ + 3H₂O = 2H₃PO₄;
3). H₃PO₄ + 3NaOH = Na₃PO₄ + 3H₂O;
4). Na₃PO₄ + 3AgNO₃ = 3NaNO₃ + Ag₃PO₄.