Assertion :A reaction is spontaneous if $E_{c e l l} = + v e$ . Reason: For $E_{c e l l} = + v e, △ G$ is always $- v e$ .

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
For a redox reaction to be spontaneous, the EMF of the cell must be positive.
As, $△ G = - n F E_{c e l l}$
Therefore, for $E_{c e l l} = + v e, △ G$ is always negative.

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