Question

Which does not affect the rate of a reaction?

• A. Nature of the reactants
• B. Time
• C. Concentrations
• D. Surface area exposed
• E. Temperature

Answer 1

Answer: (B)

Time

Time does not affect the rate of a reaction. Hence, in the rate law expression $rate=k[A{]}^n$, there is no term for time.
Nature of the reactants, Concentrations, surface area exposed and temperature affects the rate of a reaction.