WAEC Chemistry 2014 Objective — Question 20
Question 20 of 50 from the West African Examinations Council (WAEC) Chemistry 2014 Objective paper, with the correct answer and a full explanation.
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Which of the following statements about a chemical system in equilibrium is correct?
- A. The reaction is irreversible
- B. The reaction goes to completion
- C. Equilibrium is re-established when a stress is appliedCorrect
- D. Equilibrium position is affected by catalyst
Explanation
When a stress is applied to a chemical system at equilibrium, the equilibrium position is disturbed, but equilibrium is re-established in accordance with Le Chatelier's principle. Catalysts do not affect the position of equilibrium.
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