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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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Q. ways in which the equilibrium concentration of

A g^{+}

can be reduced in a solution of

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, in contact with solid

A g C l .

N a^{+} (a q) + C l^{-} (a q) + A g^{+} (a q) + N O_{3}^{-} (a q) ⇌ A g C l (s) + N a^{+} (a q) + N O_{3}^{-} (a q) Δ H = - 65.9 k J

Q. How can be equilibrium concentration of

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can be reduced in a solution of

N a^{+}, C l^{+}, A g^{+}

N O_{3}

, in contact with solid

A g C l

N a^{+} (a q) + C l (a q) + A g^{+} (a q) + N O_{3} (a q) ⇌ A g C l (s) + N a^{+} (a q) + N O_{3} (a q) Δ H = 65.9 k J

Q. The correct order for the hydration energy of

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