Which of the following factors does NOT affect the rate of a chemical reaction?
A. Concentration of reactants B. Presence of a catalyst C. Molecular weight of products D. Temperature
Correct Answer: C
Explanation
The molecular weight of products is not directly related to the rate of a chemical reaction. The factors that affect the reaction rate include concentration of reactants, temperature, presence of catalysts, surface area, and the nature of the reactants and products.