Which one of the following statements is correct about the effect of a catalyst?
Correct answer: D. It provides an alternative route for a reaction
- A. It increases the equilibrium constant for the forward reaction
- B. It increases the rate of the equilibrium constant for the forward reaction but not of the reverse reaction
- C. It increases the yield of product at equilibrium
- D. It provides an alternative route for a reaction
Explanation
A catalyst provides an alternative route for a reaction to take place by lowering the activation energy for the reaction to start and hence, speeds it up.
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About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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