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Question

For the electrochemical cell,M|M+| |X|X, E0M+/M=0.44 Vand E0X/X=0.33 V
From these data one can deduce that:

A
M+XM++X is a spontaneous reaction
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B
M++XM+X is a spontaneous reaction
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C
E0cell=0.77 V
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D
E0cell=0.77 V
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Solution

The correct option is B M++XM+X is a spontaneous reaction

M|M+||X|X
EoM+/M = 0.44
EoX/X = 0.33

M M+ + E --- (1)

X + e X ---- (2)

Adding 1 and 2

M + X M+ +X

Eo = EoR EoL

=0.11

ΔGo = nFEo

=+ve

Therefore the reaction is spontaneous in opposite direction

M+ +X M + X

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