Chemistry

Problem

For the reaction at equilibrium :

2\text{NOBr}(g) \rightleftharpoons 2\text{NO}(g) + \text{Br}_2(g)

P_{\text{Br}_2} = \frac{P}{9}

at equilibrium and total pressure is

P

, then ratio of

\frac{K_p}{P}

is equal to : a.

\frac{1}{9}

\frac{1}{81}

\frac{1}{27}

\frac{1}{3}