What happens when white phosphorus is heated ...

NCERT Class XII Chemistry
Chapter - The p-Block Elements
Questions with Solutions

Question : 48 of 74

Marks: +1, -0

What happens when white phosphorus is heated with concentrated NaOH solution in an inert atmosphere of

\mathrm{CO}_2

Solution:

When white phosphorus is heated with concentrated

\mathrm{NaOH}

solution in an inert atmosphere of

\mathrm{CO}_2

, phosphine gas is liberated.

\mathrm{P}_4 + 3\mathrm{NaOH} + 3\mathrm{H}_2O \rightarrow \underset{\text{Phosphine}}{\mathrm{PH}_3} + 3\mathrm{NaH_2PO_2}

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