A 2.00 L sealed container at 500 K initially holds only at a pressure of 1.20 atm

CHEMISTRY · Single correct · CBSE · Chemistry · Equilibrium · Equilibrium

Problem

A 2.00 L sealed container at 500 K initially holds only

\text{NOCl}(g)

at a pressure of 1.20 atm. The system reaches equilibrium according to

\displaystyle 2\text{NOCl}(g)\rightleftharpoons 2\text{NO}(g)+\text{Cl}_{2}(g)

, and the partial pressure of

\text{Cl}_{2}

is found to be 0.20 atm. What is the numerical value of

K_{p}

at 500 K? (a)

4.0\times10^{-2}

(b)

1.0\times10^{-1}

(c)

5.0\times10^{-2}

(d)

2.2\times10^{-2}