Write down the reaction equation: Phosphorus – phosphorus (V) oxide – phosphoric acid

| June 10, 2021 | education

Write down the reaction equation: Phosphorus – phosphorus (V) oxide – phosphoric acid – sodium phosphate – silver (I) phosphate

1) Phosphorus reacts with oxygen. Pentavalent phosphorus oxide is formed.

4 P + 5 O2 = 2 P2O5

2) We take pentavalent phosphorus oxide, which we received in the first reaction, and add water to it to obtain phosphoric acid.

P2O5 + 3 H2O = 2 H3PO4

3) The reaction takes place between substances such as phosphoric acid and sodium hydroxide. As a result of the reaction, a substance is formed: sodium phosphate salt and water is released.

H3PO4 +3 NaOH = Na3PO4 + 3 H2O

4) Sodium phosphate salt reacts with calcium chloride to form calcium phosphate salt, which precipitates and sodium chloride salt.

2 Na3PO4 + 3 CaCl2 = Ca3 (PO4) 2 (precipitate) + 6 NaCl

5) The reaction takes place between substances such as calcium phosphate salt with sulfuric acid. We get phosphoric acid and calcium sulfate salt, which precipitates.

Ca3 (PO4) 2 + 3 H2SO4 = 2 H3PO4 + 3 CaSO4.



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