What is the relationship between Gibbs free energy (ΔG) and cell potential (E) i

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Question: What is the relationship between Gibbs free energy (ΔG) and cell potential (E) in electrochemistry?

Options:

Correct Answer: ΔG = -nFE

Solution:

The relationship is ΔG = -nFE, where n is the number of moles of electrons transferred.

What is the relationship between Gibbs free energy (ΔG) and cell potential (E) in electrochemistry?

What is the relationship between Gibbs free energy (ΔG) and cell potential (E) in electrochemistry?

Step 1: Understand that Gibbs free energy (ΔG) is a measure of the energy available to do work in a chemical reaction.
Step 2: Know that cell potential (E) is the voltage produced by an electrochemical cell.
Step 3: Recognize that ΔG and E are related in electrochemistry, meaning they can influence each other.
Step 4: Learn the formula that connects them: ΔG = -nFE.
Step 5: In the formula, 'n' is the number of moles of electrons transferred in the reaction.
Step 6: 'F' is Faraday's constant, which is approximately 96485 coulombs per mole of electrons.
Step 7: The negative sign in the formula indicates that a positive cell potential (E) leads to a negative ΔG, meaning the reaction is spontaneous.

No concepts available.