Chemistry Electrochemistry Electrode Potential, E Cell, Nernst Equation and ECS Single Correct MCQ
Published on: August 12, 2026

During electrochemical process:

A
Gibbs free energy increases
B
Gibbs free energy remains constant
C
No prediction can be made about Gibbs free energy
D
Gibbs free energy decreases

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The correct answer is:
D

In a cell reaction, electrical energy is produced. The electrical work is done by the system and it results in decrease in the free energy of the system.

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