JEE Main · ChemistryEasy
Which of the following factors does not affect the rate of a chemical reaction?
- A.Temperature
- B.Concentration of reactants
- C.Molecularity of the reaction
- D.Presence of a catalyst
Show correct answer & step-by-step solution
Correct answer: C — Molecularity of the reaction
Solution
- Temperature affects the rate constant according to the Arrhenius equation.
- Concentration of reactants directly influences the rate of reaction as per the rate law.
- A catalyst changes the reaction pathway and lowers the activation energy, thus increasing the rate.
- Molecularity is a theoretical property of an elementary step and does not change the rate of a reaction.
- Hence the answer is (C).
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