The equilibrium constant for the reaction `N_(2)(g)+O_(2)(g) hArr 2NO(g)` is `4.0xx10^(-4)` at `2000 K`. In the presence of a catalyst, the equilibrium is attained `10` times faster. Therefore, the equilibrium constant in presence of the catalyst at `2000 K` is

Options

A. `4xx10^(-3)`
B. `4xx10^(-4)`
C. `4xx10^(-5)`
D. None

Answer

B

Explanation

Equilibrium constant of a reaction remains unchanged when the same reaction is carried out in the presence of a catalyst because the catalyst will catalyse both the forward and backward reactions equally.