Carry out the transformations: P → P2O5 → H3PO4 → Na3PO4 → Ag3PO4.

1.P4 + 5O2 = P4O10 or P2O5.
The combustion of phosphorus in an excess of dry oxygen is the formation of phosphorus (V) oxide.
2. P2O5 + 3H2O = 2H3PO4.
Dissolving phosphorus oxide in water to form orthophosphoric acid.
3. H3PO4 + 3NaOH = Na3PO4 + 3H2O.
Obtaining sodium phosphate in the reaction of phosphoric acid and alkali.
4. Na3PO4 + 3AgNO3 = Ag3PO4 + 3NaNO3.
The exchange reaction is the formation of silver phosphate and sodium nitrate.



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