Answer: pre-exponential factor.
- A the rate constant
- B pre-exponential factor
- C the activation energy
- D the reaction order
Correct answer: B. pre-exponential factor
Explanation: A is the pre-exponential (frequency) factor, related to the frequency and orientation of collisions.
First-order decay curve: concentration halves every t½, and that half-life is constant - a defining test for first-order kinetics.
Concept context
Study the speed of reactions and what affects it: concentration, temperature, and catalysts. Covers rate law, order of reaction, the Arrhenius equation, and reaction mechanisms step by step.