An electrochemical cell has a nominal voltage of 9.00 V.
What will the voltage of the cell be once the reactants are completely used up?
0.00 V0.00\text{ V}0.00 V
4.50 V4.50\text{ V}4.50 V
9.00 V9.00\text{ V}9.00 V
18.00 V18.00\text{ V}18.00 V