Question

A cell reaction would be spontaneous if the cell potential and  are respectively:

A

positive and negative

B

negative , negative

C

zero ,zero

D

positive , zero

Hard

Solution

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Correct option is A)


For a spontaneous reaction, the standard change in gibbs free energy and the standard cell potential Ecell will be negative and positive respectively. then as
Thus, and have of opposite signs.
So, option A. is the correct answer.

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