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The standard reduction potentials for Zn...

The standard reduction potentials for `Zn^(2+)//Zn, Ni^(2+)//Ni, and Fe^(2+)//Fe` are -0.76, -0.23 and -0.44 V respectively. The reaction `X + y^(2+) rarr + Y` will be spontaneous when :

A

`X = Zn, Y = Ni`

B

`X = Ni, Y = Fe`

C

`X = Ni, Y =Zn`

D

`X = Fe, Y = Zn`

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The correct Answer is:
A
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ALLEN-ELECTROCHEMISTRY-EXERCISE-05 [A]
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