Chemistry, asked by IAmARandomPerson, 20 days ago

Phosphorous to phosphoric acid

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Answered by pdey89747

1

Answer:

Phosphorus is an element. Due to its high reactivity, phosphorus is never found as a free element in nature. The phosphate rock is initially converted to phosphoric acid (P2O5) by reaction with sulfuric acid.

On heating at 200 °C, phosphorous acid disproportionates to phosphoric acid and phosphine: 4 H3PO3 → 3 H3PO4 + PH. This reaction is used for laboratory-scale preparations of PH3. Phosphorous acid slowly oxidizes in air to phosphoric acid.

Related compounds: H3PO4 (i.e., PO(OH)3); H3PO2 (i.e., H2PO(OH))

Chemical formula: H3PO3

Melting point: 73.6 °C (164.5 °F; 346.8 K)

Density: 1.651 g/cm3 (21 °C)

Answered by aadirajput39

1

Concentrated nitric acid oxidises phosphorus to phosphoric acid according to the following equation:

P+5HNO3→H3PO4+5NO2+H2O.

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