Q51 / 180 · NEET 2020 (Phase 1) · Chemistry

Hydrolysis of sucrose is given by the following reaction.
Sucrose +H2O⇌ Glucose + Fructose
If the equilibrium constant KC is 2×1013 at 300 K, the value of ΔrG⊖ at the same temperature will be:

  • A
    8.314 J mol–1K–1×300 K×ln2×1013
  • B
    8.314 J mol–1K–1×300 K×ln3×1013
  • C
    –8.314 J mol–1K–1×300 K×ln4×1013
  • Correct answer
    D
    –8.314 J mol–1K–1×300 K×ln2×1013

Solution

Kc=2×1013

T=300 K

ΔGo=−RT lnkeq

ΔGo=−8.314 JK−1 mol−1×300 K×ln2×1013

Hence, the correct answer is option: 'D'.

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