Question

If the rate expression for a reaction is $\frac{dx}{dt}=k{\left[A\right]}^{1/2}{\left[B\right]}^{3/2}$, the overall order of the reaction is:

• A. $2$
• B. $1/2$
• C. $3/2$
• D. $1$

Answer 1

The correct option is A $2$

$\frac{dx}{dt}=K{\left[A\right]}^{1/2}{\left[B\right]}^{3/2}$

The overall order of a reactiob is given as sum of all the partial orders.

Hence overall order$=\frac{1}{2}+\frac{3}{2}=2$.