A voltaic cell is constructed with two Zn2+-Zn electrodes, where the half-reaction is
Zn2+(aq) + 2 e-→ Zn(s) E° = -0.763 V
The concentrations of zinc ion in the two compartments are 5.50 mol L-1 and 1.11 × 10-2 mol L-1, respectively. The cell emf is ________ V.
◦ -1.54 × 10-3
◦ -378
◦ 0.0798
◦ 0.160
◦ -0.761