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Assertion (A): HNO(3) acts only as an ox...

Assertion (A): `HNO_(3)` acts only as an oxidising agent, while `HNO_(2)` acts both as an oxidising agnet and a reducing agent.
Reason (R ): The oxidation number of `N` in `HNO_(3)` is mximum.

A

If both `(A)` and `(R )` are correct and `(R )` is the correct explanation of `(A)`.

B

If both `(A)` and `(R )` are correct but `(R )` is not the correct explanation of `(A)`.

C

If `(A)` is correct but `(R )` is incorrect.

D

If `(A)` and `(R )` are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
A
Both `(A)` and `(R )` are correct and `(R )` is the correct explanation for `(A)` since the oxidation number of `N` in `HNO_(3)` is maximum `(+5)` , therefore, it can only decrease. Hence, `HNO_(3)` acts as an oxidising agent.
In `HNO_(2)`, the oxidation number of `N` is `+3`, so it can increase by losing electrons or can decrease by accepting electrons. Therefore, `HNO_(2)` acats both as an oxidising as wll as a reducing agent.
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