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A voltaic cell consists of a Zn/Zn2+ half-cell and a Ni/Ni2+ half-cell at 25 °C. The...

A voltaic cell consists of a Zn/Zn2+ half-cell and a Ni/Ni2+ half-cell at 25 °C. The initial concentrations of Ni2+ and Zn2+ are 1.00 M and 0.150 M respectively.

a. What is the initial cell potential?

b. What is the cell potential when the concentration of Ni2+ has fallen to 0.250 M? (Hint: What should the concentration of Zn2+ be if Ni2+ has fallen from its original concentration to its current concentration?)

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