What is the significance of the Gibbs free energy (G)?

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Question: What is the significance of the Gibbs free energy (G)?

Options:

Correct Answer: It indicates the spontaneity of a process.

Solution:

Gibbs free energy indicates the spontaneity of a process; a negative change in G suggests a spontaneous reaction.

What is the significance of the Gibbs free energy (G)?

What is the significance of the Gibbs free energy (G)?

Step 1: Understand that Gibbs free energy (G) is a measure of energy available to do work in a system.
Step 2: Recognize that a change in Gibbs free energy (ΔG) tells us about the spontaneity of a reaction.
Step 3: If ΔG is negative, it means the reaction can happen on its own without needing extra energy; this is called a spontaneous reaction.
Step 4: If ΔG is positive, it means the reaction needs energy to occur; it is not spontaneous.
Step 5: Therefore, Gibbs free energy helps predict whether a chemical reaction will happen naturally.

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