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If ΔG is positive, what can be inferred about the reaction?

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Question: If ΔG is positive, what can be inferred about the reaction?

Options:

  1. The reaction is spontaneous.
  2. The reaction is at equilibrium.
  3. The reaction is non-spontaneous.
  4. The reaction will proceed in reverse.

Correct Answer: The reaction is non-spontaneous.

Solution: 

If ΔG is positive, the reaction is non-spontaneous under the given conditions.

If ΔG is positive, what can be inferred about the reaction?

Practice Questions

Q1
If ΔG is positive, what can be inferred about the reaction?
  1. The reaction is spontaneous.
  2. The reaction is at equilibrium.
  3. The reaction is non-spontaneous.
  4. The reaction will proceed in reverse.

Questions & Step-by-Step Solutions

If ΔG is positive, what can be inferred about the reaction?
  • Step 1: Understand what ΔG means. ΔG represents the change in free energy of a reaction.
  • Step 2: Know that a positive ΔG indicates that the energy of the products is higher than the energy of the reactants.
  • Step 3: Recognize that a positive ΔG means the reaction requires energy to proceed.
  • Step 4: Conclude that if a reaction requires energy, it is not spontaneous, meaning it will not happen on its own without external energy.
  • Gibbs Free Energy – ΔG (Gibbs Free Energy change) indicates the spontaneity of a reaction; a positive ΔG means the reaction is non-spontaneous.
  • Spontaneity of Reactions – A reaction with a positive ΔG will not occur without external energy input.
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