What are the units of the rate constant for a first-order reaction?

1. A Option A: s⁻¹
2. B Option B: dm⁶ mol⁻² s⁻¹
3. C Option C: dm³ mol⁻¹ s⁻¹
4. D Option D: mol dm⁻³ s⁻¹

Answer checked 11 October 2026 · How we write and check questions