20. Electrochemistry
Cell Potential: Standard
13PRACTICE PROBLEM
The overall reaction for a zinc-bromine battery is: Br2(l) + Zn(s) → 2 Br–(aq) + Zn2+(aq). Using the standard reduction potentials below, determine the standard emf generated by the battery.
Zn2+(aq) + 2 e– → Zn(s) E°red = –0.76 V
Br2(l) + 2 e– → 2 Br–(aq) E°red = +1.07 V
The overall reaction for a zinc-bromine battery is: Br2(l) + Zn(s) → 2 Br–(aq) + Zn2+(aq). Using the standard reduction potentials below, determine the standard emf generated by the battery.
Zn2+(aq) + 2 e– → Zn(s) E°red = –0.76 V
Br2(l) + 2 e– → 2 Br–(aq) E°red = +1.07 V