Question
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^ . Calculate the rate constant of the reaction at the same temperature.
MHT CET
Chemistry
Chemical Kinetics
2026
MHT CET 2026 (13 April Shift 1)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 6.25 M ^ -2 s ^ -1
- B. 6.0 M ^ -2 s ^ -1
- C. 6.5 M ^ -2 s ^ -1
- D. 6.75 M ^ -2 s ^ -1
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
Related: Chemistry — Chemical Kinetics · All PYQ Banks