Question

The unit , $mol{L}^{-1}{s}^{-1}$ is meant for the rate constant of the reaction having the order :

• A. 0
• B. 2
• C. 1
• D. 3

Answer 1

The correct option is A 0

General unit for rate constant $={\left(\frac{mol}{L}\right)}^{1-n}{s}^{-1}$
(where, $n=$ order of reaction)

Given, unit for rate constant $=\left(\frac{mol}{L}\right)s^{-1}$

On comparing,

${\left(\frac{mol}{L}\right)}^{1-n}{s}^{-1}=\left(\frac{mol}{L}\right)s^{-1}$

$1-n=1$

$\Rightarrow n=0$

Hence, the order of the reaction is zero.