Question

The rate of a gaseous reaction is given by the expression $k\left[A{]}^2\right[B{]}^3$. The volume of the reaction vessel is reduced to one half of the initial volume. What will be the reaction rate as compared to the original rate $a$?

• A. $\frac{1}{8}a$
• B. $\frac{1}{2}a$
• C. $2a$
• D. $32a$

Answer 1

Answer: (D)

$32a$

$Rate=k\left[A{]}^2\right[B{]}^3=a$

When volume is reduced to one half then conc. of reactants will be doubled.

$Rate=k\left[2A{]}^2\right[2B{]}^2$

$=32k\left[A{]}^2\right[B{]}^3=32a$.

So, the correct option is $D$