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Allotropes of Phosphorus

What happens ...

Question

What happens when white phosphorus is heated with concentrated $N a O H$ solution in an inert atmosphere of $C O_{2}$ ?

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Solution

White phosphorous dissolves in boiling NaOH solution (in a $C O_{2}$ atmosphere) to give phosphine ( $P H_{3}$ ). The reaction is as follows:

$P_{4}$ + $3 N a O H$ + $3 H_{2} O$ $\to$ $P H_{3} p h o s p h i n e$ + $3 N a H_{2} P O_{2}$

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Allotropes of Phosphorus

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