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Question

A galvanic cell consists of a metallic zinc plate immersed in 0.1 M Zn(NO3)2 solution. Calculate the emf of the cell at 25C. Write the chemical equations for the electrode reactions and represent the cell. (Given: EZn2+/Zn=0.76 volt and EPb2+/Pb=0.13 volt.

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Solution

Ecell=0.760.13=0.63V
Ecell=ERTnFlnQ

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