Answer: L mol⁻¹ s⁻¹.
- A s⁻¹
- B mol L⁻¹ s⁻¹
- C L mol⁻¹ s⁻¹
- D L² mol⁻² s⁻¹
Correct answer: C. L mol⁻¹ s⁻¹
Explanation: For order n, units of k are L<sup>n-1</sup> mol<sup>1-n</sup> s⁻¹. For n = 2: L mol⁻¹ s⁻¹.
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.