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Phosphorous acid on heating gives the fo...

Phosphorous acid on heating gives the following products:
`4H_(3)PO_(3)overset(Delta)rarr3H_(3)PO_(4)+PH_(3)` The above reaction is an example of

A

oxidation

B

thermal decomposition

C

disproportionation

D

reduction

Text Solution

Verified by Experts

The correct Answer is:
C
`4H_(3)PO_(3)overset(Delta)rarr3H_(3)PO_(4)+PH_(3)`
In the reaction, the acid in+ 3 oxidation state of P tends to disproportionate to higher (+5) and lower (-3) oxidation state in `H_(3)PO_(4)` and `PH_(3)` respectively.
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