Question
The rate constant of a reaction is k = 3.28 10^ -4 s^ -1 . Find the order of the reaction.
MHT CET
Chemistry
Chemical Kinetics
2026
MHT CET 2026 (13 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. Zero order
- B. First order
- C. Second order
- D. Third order
Answer
B. First order
Step-by-step solution
The unit of the rate constant k for an n-th order reaction is given by (mol L^ -1 )^ 1-n s^ -1 . Given that the unit of the rate constant is s^ -1 , we can equate the powers of concentration: 1 - n = 0 n = 1 Therefore, the reaction is of the first order. Answer: First order
Related: Chemistry — Chemical Kinetics · All PYQ Banks