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Characteristics of Equilibrium Constant

Choose the co...

Question

Choose the correct answer form the alternatives given.
$E^{\circ}$ for $C l_{2} / C l^{-} = + 1.36, I_{2} / I^{-} = + 0.53, A g^{+} / A g = + 0.79, N a^{+} / N a = - 2.71$ and $L i^{+} / L i = - 3.04 V$ What is the order of decreasing reducing strength for these species?

A

L i > C l^{-} > A g > I^{-} > N a

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B

L i > N a > I^{-} > A g > C l^{-}

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C

C l^{-} > A g > I^{-} > N a > L i

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D

N a > L i > A g > C l^{-} > I^{-}

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Solution

The correct option is B $L i > N a > I^{-} > A g > C l^{-}$
more negative the $E^{\circ} v a l u e$ stronger will be the reducing strength. Thus the decreasing order of reducing strength is $L i > N a > I^{-} > A g > {C l}^{-}$

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