Question

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

• A. $2$
• B. $\frac{1}{2}$
• C. $\frac{3}{2}$
• D. $1$

Answer 1

The correct option is A $2$

The rate expression is $\frac{dx}{dt}=K{\left[A\right]}^{\frac{1}{2}}{\left[B\right]}^{\frac{3}{2}}$. Order of the reaction with respect to A and B is 1/2 and 3/2 respectively.

Hence, the overall order of the reaction is $\frac{1}{2}+\frac{3}{2}=2$.