Question

According to the expression $ \Delta G^{\circ} = -nFE^{\circ} $ , the cell reaction is spontaneous when (Notations and symbols carry their usual meanings)

• A. $ \Delta G^{\circ} $ is positive
• B. $ \Delta G^{\circ} $ is zero
• C. $ E^{\circ} $ is negative
• D. $ E^{\circ} $ is positive

Answer 1

Answer: (D)

For a spontaneous process, Gibb’s free energy change must be negative, so $E^{\circ}$ should be positive