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  4. Phosphine is generally prepared in the laboratory

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Q. Phosphine is generally prepared in the laboratory

The p-Block Elements - Part2

Solution:

$\underset{\text { White or yellow }}{ P _{4}}+3 KOH +3 H _{2} O \rightarrow \underset{\text { Potassium hypophosphite }}{3 KH _{2} PO _{2}}+ PH _{3}$