Which term describes the total voltage of a redox reaction that is nonspontaneous?
O A. Positive
O B. Zero
O C. Nonzero
O D. Negative

Negative

Explanation:

When a cell undergoes a redox reaction, there is a transfer of electrons from the anode to the cathode. Oxidation occurs at the anode and reduction occurs at the cathode. The cell voltage is defined as the difference between the electrode potential of the cathode and the electrode potential of the anode.

If the electrodes of the cell are well arranged, the cell potential will be positive indicating a spontaneous flow of electrons from anode to cathode. A negative cell potential indicates that the cell was not well arranged and that the positions of cathode and anode were interchanged.

Hence a negative value of cell potential shows a non spontaneous redox reaction.