S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following increases the rate of a chemical reaction according to collision theory?

  • (A) Decreasing temperature
  • (B) Reducing concentration of reactants
  • (C) Adding a catalyst
  • (D) Increasing activation energy
  • Correct Answer - Option(C)
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  • Filed under category Chemistry
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Explanation by: Shyam Dubey
A catalyst provides an alternative pathway with a lower activation energy, increasing the rate by increasing the fraction of collisions that are effective. Decreasing temperature lowers kinetic energy and reduces reaction rate (option1 wrong). Reducing concentration lowers collision frequency (option2 wrong). Increasing activation energy would decrease the rate (option4 wrong).

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