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Question
What should be the signs (positive/negative) for \[\ce{E^0_{cell}}\] and ΔG0 for a spontaneous redox reaction occurring under standard conditions?
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Solution
For a redox reaction to take place spontaneously, ΔG0 must be negative.
As ΔG0 = −nFE0
So, for a spontaneous redox reaction, E0 should be positive.
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