What is the equilibrium constant for the
reaction taking place at room temperature
(T = 25◦C) in the battery
Zn(s)| Zn2+(aq)|| Ce4+(aq)| Ce3+(aq) ?
Assume that the number of electrons transferred
in the reaction is n = 2.
Zn2+ + 2 e
− → Zn E
◦
red = −0.76 V
Ce4+ + e
− → Ce3+ E
◦
red = +1.61 V
1. 6.44 × 1077
2. 1.34 × 1080
3. 1.84 × 102
4. 6.52 × 1083
5. 2.37