Question: What is the significance of the Gibbs free energy change (ΔG)?
Options:
Indicates the spontaneity of a reaction
Indicates the rate of a reaction
Indicates the equilibrium position
Indicates the enthalpy change
Correct Answer: Indicates the spontaneity of a reaction
Solution:
ΔG indicates whether a reaction is spontaneous (ΔG < 0) or non-spontaneous (ΔG > 0).
What is the significance of the Gibbs free energy change (ΔG)?
Practice Questions
Q1
What is the significance of the Gibbs free energy change (ΔG)?
Indicates the spontaneity of a reaction
Indicates the rate of a reaction
Indicates the equilibrium position
Indicates the enthalpy change
Questions & Step-by-Step Solutions
What is the significance of the Gibbs free energy change (ΔG)?
Step 1: Understand that Gibbs free energy (ΔG) is a measure of energy available to do work in a chemical reaction.
Step 2: Know that if ΔG is less than 0 (ΔG < 0), the reaction can happen on its own without needing extra energy. This is called a spontaneous reaction.
Step 3: If ΔG is greater than 0 (ΔG > 0), the reaction needs energy to happen and will not occur on its own. This is called a non-spontaneous reaction.
Step 4: Remember that ΔG helps predict the direction of a reaction and whether it will occur naturally.
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