What is the significance of the Gibbs free energy in thermodynamics?

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Question: What is the significance of the Gibbs free energy in thermodynamics?

Options:

Correct Answer: It predicts the direction of spontaneous processes

Solution:

Gibbs free energy (G) indicates the spontaneity of a process; a negative change in G (ΔG < 0) suggests a spontaneous reaction.

What is the significance of the Gibbs free energy in thermodynamics?

What is the significance of the Gibbs free energy in thermodynamics?

Step 1: Understand what Gibbs free energy (G) is. It is a measure of the energy available to do work in a system at constant temperature and pressure.
Step 2: Learn about the change in Gibbs free energy (ΔG). This is the difference in Gibbs free energy between the products and reactants of a reaction.
Step 3: Know the significance of ΔG. If ΔG is less than 0 (ΔG < 0), it means the reaction can happen spontaneously without needing extra energy.
Step 4: If ΔG is greater than 0 (ΔG > 0), the reaction is non-spontaneous and will not occur on its own.
Step 5: Remember that Gibbs free energy helps predict whether a reaction will happen and how much energy is available for work.

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