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JAMB Chemistry 1997 Question 28

Question 28

Chemical Equilibrium

One method of driving the position of equilibrium of an endothermic reaction forward is to

  1. A.increase temperature at constant pressure
  2. B.decrease pressure at constant temperature
  3. C.cool down the apparatus with water
  4. D.decrease temperature at constant pressure.
Show the answer and explanation

Answer: A (increase temperature at constant pressure)

Explanation

An endothermic forward reaction absorbs heat. By Le Chatelier's principle, raising the temperature favours the reaction that takes in heat, so the equilibrium moves forward.