Question

Rate constant for a $n^{th}$ order reaction has the dimensions
(Where M is concentration unit)

• A. $tim{e}^{-1}{M}^{(1-n)}$
• B. $tim{e}^{1-n}{M}^{-1}$
• C. $tim{e}^1{M}^{(1-n)}$
• D. $tim{e}^{-1}{M}^{1+n}$

Answer 1

The correct option is A $tim{e}^{-1}{M}^{(1-n)}$

$Rate=k[conc{]}^n\frac{\left[conc\right]}{time}=k[conc{]}^{n}k=[conc{]}^{1-n}.tim{e}^{-1}=tim{e}^{-1}.M^{1-n}$