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Question

White phosphorus when boiled with strong solution of caustic soda produces

A
Phosphorus acis
B
Phosphine
C
Phosphoric acid
D
No reaction
Solution
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Correct option is A. Phosphine
White phosphorus when boiled with a strong solution of caustic soda produces phosphine gas.

$$P_4+3H_2O+3NaOH\to \underset{Phosphine }{PH_3} +\underset{Sod.\ hypopophosphite}{3NaH_2PO_2}$$

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