Which of the following conditions will lead to a positive ΔG?

Practice Questions

Q1
Which of the following conditions will lead to a positive ΔG?
  1. High temperature and low entropy.
  2. Low temperature and high enthalpy.
  3. High temperature and high entropy.
  4. Low temperature and low enthalpy.

Questions & Step-by-Step Solutions

Which of the following conditions will lead to a positive ΔG?
  • Step 1: Understand what ΔG means. ΔG is the change in free energy of a reaction.
  • Step 2: Know that a positive ΔG means the reaction is non-spontaneous, meaning it won't happen on its own.
  • Step 3: Learn about enthalpy (ΔH). High enthalpy means the reaction requires a lot of energy.
  • Step 4: Recognize that at low temperatures, the effect of enthalpy can dominate over entropy (ΔS).
  • Step 5: Conclude that if the enthalpy is high and the temperature is low, ΔG can be positive.
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