States Of Matter

Step 1: Understanding the Relationship.
The Nernst equation relates (Gibbs free energy) and (electrochemical cell potential): Where: - is the number of moles of electrons involved, - is the Faraday constant ( ), - is the cell potential.
Step 2: Analyzing the Options.
- (A) is correct because it is the standard equation used in electrochemistry.
- (B) is incorrect because the sign is wrong for the relationship.
- (C) and (D) both are variations with incorrect signs.
Step 3: Conclusion.
The correct answer is (A) .