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For H(3)PO(3) and H(3)PO(4) the correct ...

For `H_(3)PO_(3)` and `H_(3)PO_(4)` the correct choice is

A

`H_(3)PO_(3)` is dibasic and reducing

B

`H_(3)PO_(3)` is dibasic and non-reducing

C

`H_(3)PO_(4)` is tribasic and reducing

D

`H_(3)PO_(3)` is tribasic and non-reducing

Text Solution

Verified by Experts

The correct Answer is:
A
The structure of `H_(3)PO_(3)` is as follows. There are only two -OH groups and hence dibasic. The oxidation number of P in this acid is +3. whereas P may have +5 oxidation state also. Therefore, `H_(3)PO_(3)` can be oxidised which means `H_(3)PO_(3)` is a reducing agent.
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ERRORLESS -S AND P BLOCK ELEMENTS-JEE Section (Only choice correct answer)
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