JEE Chemistry · Hard

Chemical Thermodynamics and Thermochemistry: Mixed MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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MixedHardQuestion 800015

Question

The standard free energy ΔG° is related to equilibrium constant K by:
  1. A
    ΔG° = −RT ln K
  2. B
    ΔG° = RT ln K
  3. C
    ΔG° = −nFE°
  4. D
    Both A and C
    Correct

Correct answer

Both A and C

Explanation

ΔG° = −RT ln K (from thermodynamics). For electrochemical cells: ΔG° = −nFE°cell. Both expressions are valid and can be equated: RT ln K = nFE°cell.