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What are the cell potentials of... nickel + zinc nickel + iron nickel + copper copper...

What are the cell potentials of...

nickel + zinc

nickel + iron

nickel + copper

copper + iron

copper + zinc

iron + zinc

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Answer #1

EMF of a galvanic cell is the maximum potential difference between 2 electrodes of the cell. There are 2 electrodes cathode and anode. E of cell = E of cathode – E of anode. The potential of the electrodes is reduction potential. Reduction is process of gaining electrons and oxidation is process of losing electrons. The one that undergo oxidation will have lesser reduction potential and will be the anode and the one with higher reduction potential is the cathode. E of cell = E of cathode – E of anode.

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