A galvanic cell consists of a Cd(s)|Cd2+(aq) half-cell and a Zn(s)|Zn2+(aq) half-cell connected by a salt bridge. Reduction occurs in the cadmium half-cell. The cell can be represented in standard notation as
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(Zn(s)|Zn2+(aq) || Cd2+(aq)|Cd (s |
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Cd2+(aq)|Cd(s) || Zn(s)|Zn2+(aq |