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phosphine is generally prepared in the l...

phosphine is generally prepared in the laboratory

A

By heating phosphorus in a current of hydrogen

B

By heating white phosphorus with aqueous solution of caustic potash

C

By decomposition of `P_(2)H_(4)` at `110^(@)C`

D

`By heating red phosphorus with an aqueous solution of caustic soda

Text Solution

Verified by Experts

The correct Answer is:
B
`underset(White)(P_(4))+3NaOH+3H_(2)Orarr underset(Phosph i n e)(PH_(3))+3NaH_(2)PO_(2)`
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