Question

The reaction is spontaneous if the cell potential is

• A. positive
• B. negative
• C. zero
• D. infinite

Answer 1

Answer: (A)

For a reaction to be spontaneous $\Delta G$ should be negative.
$\Delta G=-nF{E}^{\circ }\text{ cell }$
From this reaction, $\Delta G$ will be negative when $E^{\circ }$ cell is positive.