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What happens ? (a)When phosphine is heated at `150^(@)C`. (b)When phosphine is dissolved in water in presence of light.

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What happens ?
(a)When phosphine is heated at `150^(@)C`.
(b)When phosphine is dissolved in water in presence of light.
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(a) Phosphine on heating at `150^(@)C` burns forming `H_(3)PO_(4) " " PH_(3) + 2O_(2) rarr H_(3)PO_(4)`
(b) The solution of `PH_(3)` in water decomposes in presence of light giving red phosphorus and `H_(2)`
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