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What is the Gibbs Free Energy change (ΔG) at equilibrium?

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Question: What is the Gibbs Free Energy change (ΔG) at equilibrium?

Options:

  1. ΔG < 0
  2. ΔG = 0
  3. ΔG > 0
  4. ΔG = ΔH - TΔS

Correct Answer: ΔG = 0

Solution: 

At equilibrium, the Gibbs Free Energy change (ΔG) is zero, indicating that the system is at its lowest energy state.

What is the Gibbs Free Energy change (ΔG) at equilibrium?

Practice Questions

Q1
What is the Gibbs Free Energy change (ΔG) at equilibrium?
  1. ΔG < 0
  2. ΔG = 0
  3. ΔG > 0
  4. ΔG = ΔH - TΔS

Questions & Step-by-Step Solutions

What is the Gibbs Free Energy change (ΔG) at equilibrium?
Correct Answer: 0
  • Step 1: Understand what Gibbs Free Energy (ΔG) is. It is a measure of the energy available to do work in a system.
  • Step 2: Know that a system reaches equilibrium when the forward and reverse reactions occur at the same rate.
  • Step 3: At equilibrium, there is no net change in the concentrations of reactants and products.
  • Step 4: When a system is at equilibrium, it is in a state of minimum energy.
  • Step 5: Since the system is at minimum energy at equilibrium, the change in Gibbs Free Energy (ΔG) is zero.
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