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Question

Hydrolysis of sucrose is given by the following reaction. Sucrose+H2OGlucose+Fructose
If the equilibrium constant (Kc) is 2×1013 at 300 K, the value of ΔrG0 at the same temperature will be :

A
8.314 J mol1 K1×300 K×ln(2×1013)
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B
8.314 J mol1 K1×300 K×ln(2×1013)
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C
8.314 J mol1×300 K×ln(3×1013)
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D
8.314 J mol1 K1×300 K×ln(4×1013)
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Solution

The correct option is A 8.314 J mol1 K1×300 K×ln(2×1013)
The relation between gibbs free energy and equilibrium constat is given by:
ΔrG0=RTlnKcΔrG0=8.314×300×ln(2×1013)
ΔrG0=8.314 J mol1 K1×300 K×ln(2×1013)
Option (a) is correct

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