Question: What does a positive ΔG indicate about the spontaneity of a reaction?
Options:
The reaction is spontaneous.
The reaction is non-spontaneous.
The reaction is at equilibrium.
The reaction is exothermic.
Correct Answer: The reaction is non-spontaneous.
Solution:
A positive ΔG indicates that the reaction is non-spontaneous.
What does a positive ΔG indicate about the spontaneity of a reaction?
Practice Questions
Q1
What does a positive ΔG indicate about the spontaneity of a reaction?
The reaction is spontaneous.
The reaction is non-spontaneous.
The reaction is at equilibrium.
The reaction is exothermic.
Questions & Step-by-Step Solutions
What does a positive ΔG indicate about the spontaneity of a reaction?
Step 1: Understand what ΔG means. ΔG is the change in free energy of a reaction.
Step 2: Know that a positive ΔG value means the energy of the products is higher than the energy of the reactants.
Step 3: Recognize that for a reaction to be spontaneous, it should release energy, which means ΔG should be negative.
Step 4: Conclude that if ΔG is positive, the reaction requires energy input to occur, making it non-spontaneous.
Gibbs Free Energy (ΔG) – ΔG is a thermodynamic potential that indicates the spontaneity of a reaction; a positive ΔG means the reaction requires energy input to proceed.
Spontaneity of Reactions – A reaction is spontaneous if it can occur without external energy; a positive ΔG indicates non-spontaneity.
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