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JAMB Chemistry 2013 Question 26

Question 26

Energy Changes

In an endothermic reaction, if there is a loss in entropy the reaction will

  1. A.be indeterminate.
  2. B.be spontaneous.
  3. C.not be spontaneous.
  4. D.be at equilibrium.
Show the answer and explanation

Answer: C (not be spontaneous.)

Explanation

ΔG = ΔH − TΔS. With ΔH positive and ΔS negative, ΔG is always positive, so the reaction cannot be spontaneous.