MDCAT Chemistry MCQ #2253

In the synthesis of sulfur trioxide via the Contact process, finely divided platinum is used. What effect does this catalyst have?

MDCAT Chemistry MCQ #2253

  1. Question 1

    Q1. In the synthesis of sulfur trioxide via the Contact process, finely divided platinum is used. What effect does this catalyst have?

    • A) It increases the rate of both forward and backward reactions
    • B) It shifts the equilibrium to favor product formation
    • C) It increases the value of the equilibrium constant Kc
    • D) It decreases the rate of the backward reaction only

    Answer: It increases the rate of both forward and backward reactions

    Explanation: Catalysts lower activation energy for both directions equally. Option B is wrong because catalysts do not shift the equilibrium position.