1.

Assertion: an electrochemical cell can be set up only if the redox reaction is spontaneous. Reason: A reaction is spontaneous if free energy change is negative.

Answer»

if both assertion and reason are TRUE and the reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true but reason is false
If the assertion and reason both are false.

Solution :If REDOX reaction is spontaneous, `DeltaG` is -ve and HENCE `E^(@)` is POSITIVE. `-DeltaG^(@)=NFE^(@)` cell.


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