Question:
For a reaction of order $\mathrm{n}$, the unit of the rate constant is :
Correct Option: , 3
Solution:
Rate $=\mathrm{k}[\mathrm{A}]^{\mathrm{n}}$
comparing units
$\frac{(\mathrm{mol} / \ell)}{\mathrm{sec}}=\mathrm{k}\left(\frac{\mathrm{mol}}{\ell}\right)^{\mathrm{n}}$
$\Rightarrow \mathrm{k}=\mathrm{mol}^{(1-\mathrm{n})} \ell^{(\mathrm{n}-1)} \mathrm{s}^{-1}$