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?
  1. The reaction is spontaneous.
  2. The reaction is non-spontaneous.
  3. The reaction is at equilibrium.
  4. 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.
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