Which of the following gas is formed when phosphorus reacts with conc. nitric acid?

N₂O

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N₂O₅

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NO₂

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Solution

The correct option is C
NO₂

Phosphorus reacts with conc. nitric acid to form phosphoric acid , water and nitrogen dioxide gas.

$P_{4} + 20 H N O_{3} \to 4 H_{3} P O_{4} + 4 H_{2} O + 20 N O_{2}$

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