The specific rate constant of a first order reaction depends on the:
Correct answer: D. D: Temperature
- A. A: Concentration of the reactant
- B. B: Time
- C. C: Concentration of the product
- D. D: Temperature
Explanation
The rate constant of a first-order reaction is primarily dependent on temperature. This is described by the Arrhenius equation, which shows that the rate constant increases with an increase in temperature, due to higher kinetic energy and more effective collisions among molecules. Options A, B, and C are incorrect as they suggest dependencies on concentrations or time, which do not affect the intrinsic rate constant of a first-order reaction.
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About Reaction Kinetics
Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
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