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Allotropes of Phosphorus

White phospho...

Question

White phosphorus reacts with $N a O H$ forming $P H_{3}$ and $H_{2} P O_{2}^{-}$ . This is an example of :

A

neutealisation

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B

thermal decomposition

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C

redox reaction

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D

disproportionation

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Solution

The correct option is D disproportionation
$2 P_{4} + 3 N a O H + 9 H_{2} O \to 3 N a H_{2} P O_{4} + 5 P H_{3}$
P (0) P (+5) P (-3)

So, its a disproportionation reaction.

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Allotropes of Phosphorus

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