For rate = k, the rate is 6.0 × 10⁻³ mol dm⁻³ s⁻¹ when = 0.10 and = 0.20 mol dm⁻³. What is k?

1. A Option A: 0.30 dm³ mol⁻¹ s⁻¹
2. B Option B: 0.030 dm³ mol⁻¹ s⁻¹
3. C Option C: 3.0 dm³ mol⁻¹ s⁻¹
4. D Option D: 1.2 × 10⁻⁴ dm³ mol⁻¹ s⁻¹

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