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A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 C. The...

A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 C. The initial concentrations of Pb2+ and Cu2+ are 5.10x10^-2 M and 1.70 M respectively.
What is the initial cell potential?
What is the cell potential when the concentration not Cu2+ has fallen to 0.200M?
What are the concentrations of Pb2+ and Cu2+ when the cell potential falls to 0.35V?
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