When a Potential Is Applied to a Solution That Is

When a potential is applied to a solution that is 0.10 M Ni²⁺ and 0.20 M Fe²⁺,which metal will be reduced first and at what potential? Is it possible to remove the metal from solution with 99.99% efficiency before the second metal begins to be reduced from solution?
Ni²⁺ + 2 e^- ⇋ Ni,E^o = -0.236 V
Fe²⁺ + 2 e^- ⇋ Fe,E^o = -0.44 V

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−0.2656 V is required to start...

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