Primary (storage) Batteries

Anode (-)

Zn ? Zn2+ + 2e-

Cathode (+)

2 NH4+ + 2e- ? 2 NH3 + H2

Zn (s) + 2 OH- (aq)

? ZnO (s) + 2H2O + 2e-

Cathode (+)

HgO (s) + H2O + 2e-

? Hg (l) + 2 OH- (aq)

Previous slide Next slide Back to first slide View graphic version