Assertion :If $S O P$ of substance is less than $- 1.23 V$ and over voltage $= 0 V$ , then its oxidation in its aqueous solution is not possible at $298 K$ . Reason: Standard reduction potential $(S R P)$ of water is $+ 1.23 V$ .

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is C Assertion is correct but Reason is incorrect.
If SOP of substance is 1.3 V, it has to compete with water ions for oxidation and as water has higher value of SOP so its oxidation in its aqueous solution is not possible at 298K.

$S R P$ = $- 1.23 V$

Thus reason is not correct.

Hence,option C is correct.

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Assertion :If SOP of substance is less than −1.23 V and over voltage =0 V, then its oxidation in its aqueous solution is not possible at 298K. Reason: Standard reduction potential (SRP) of water is +1.23 V.

Assertion :If $S O P$ of substance is less than $- 1.23 V$ and over voltage $= 0 V$ , then its oxidation in its aqueous solution is not possible at $298 K$ . Reason: Standard reduction potential $(S R P)$ of water is $+ 1.23 V$ .