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Question

The standard reduction potentials for $Z n^{2 +} / Z n, N i^{2 +} / N i$ and $F e^{2 +} / F e$ are $- 0.76, - 0.23$ and $- 0.44 V$ respectively. The reaction:
$X + Y^{2 +} \to X^{2 +} + Y$
will be spontaneous when.

A

X = N i, Y = F e

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B

X = N i, Y = Z n

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C

X = F e, Y = Z n

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D

X = Z n, Y = N i

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Solution

The correct option is D $X = Z n, Y = N i$

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