A chemical reaction is catalyzed by a catalyst X. Hence, X:
Correct answer: B. Does not affect equilibrium constant of the reaction
- A. Increases activation energy of the reaction
- B. Does not affect equilibrium constant of the reaction
- C. Decreases rate constant of the reaction
- D. Reduces enthalpy of the reaction
Explanation
A catalyst provides an alternative reaction pathway with lower activation energy, increasing the reaction rate. It does not change the energies of reactants or products, so the equilibrium position remains unchanged. Therefore, the correct answer is B .
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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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