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A voltaic cell consists of a Zn/Zn2+ anode and a Ni/Ni2+ cathode at 25 ∘C. The...

A voltaic cell consists of a Zn/Zn2+ anode and a Ni/Ni2+ cathode at 25 ∘C. The initial concentrations of Ni2+ and Zn2+ are 1.7 M and 0.12 M , respectively. The volume of half-cells is the same.

What is the concentration of Ni2+ when the cell potential falls to 0.456 V ?   

Enter your answer to 4 decimal places and in units of mM.

Zn2+ (aq) + 2 e-  ⟶Zn(s) E° = -0.76 V

Ni2+ (aq) + 2 e- ⟶   Ni(s) E° = -0.23 V

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Expert Solution

queen_honey_blossom answered 2 years ago
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