Question

The rate constants of the forward reaction and reserve reaction are $0.05{\sec }^{-1}$ and $2{\sec }^{-1}$ respectively,then $K_C$ is:

• A. $0.035$
• B. $0.025$
• C. $0.045$
• D. $0.02$

Answer 1

Answer: (B)

$0.025$

Given:-

Rate constant of forward reaction $\left(K_f\right)=0.05{sec}^{-1}$

Rate constant of backward reaction $\left(K_b\right)=2{sec}^{-1}$

As we know that,

Rate constant $\left(K_c\right)=\frac{K_f}{K_b}$

$\therefore K_c=\frac{0.05}{2}=0.025$

Hence, the correct option is $\text{B}$