Chemistry - Chemical Kinetics Question with Solution | TestHub

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