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Which of the following is both oxidizing...

Which of the following is both oxidizing as well as reducing agent ?

A

` H_3PO_4`

B

` HNO_3`

C

` HNO_2`

D

` SO_3`

Text Solution

Verified by Experts

The correct Answer is:
C
A given species can act both as an oxidizing agent as well as a reducing agent provided its central atom exists in an intermediate oxidation state. In `H_3,PO_4, P`has the highest oxidation state.(+5), in `HNO_3, N` has the highest oxidation state (+5), and in `SO_3, S` has the highest oxidation state. In `HNO_2`,the oxidation state of N is `+3` which can be increased as well as decreased. Thus, `HNO_2` acts as an oxidizing as well as reducing agent.
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