MHT CET202613 April 2026Morning ShiftChemistryChemical KineticsActual
For the reaction, A + B P , the rate law is rate = k[A][B]^2 . The rate of reaction is 0.25 Ms ⁻¹ when [A] = 1 M, [B] = 0.2 M at 25^ C. Calculate the rate constant of the reaction at the same temperature.
Options
- A6.25 M ⁻² s ⁻¹
- B6.0 M ⁻² s ⁻¹
- C6.5 M ⁻² s ⁻¹
- D6.75 M ⁻² s ⁻¹
Correct answer
A. 6.25 M ⁻² s ⁻¹
Step-by-step solution
Given rate law is rate = k[A][B]^2 . Substituting the given values: 0.25 = k(1)(0.2)^2 0.25 = k(0.04) k = 0.25 0.04 = 6.25 M ⁻² s ⁻¹ Answer: 6.25 M ⁻² s ⁻¹