Chapter 15, Problem 96E

At a given temperature, a system containing O₂(g) and some oxides of nitrogen are described by these reactions:
$\text{2NO}\left(\text{g}\right)+{\text{O}}_{\text{2}}\left(\text{g}\right)\rightleftharpoons {\text{2NO}}_{\text{2}}\left(\text{g}\right)$K_p= 10⁴
${\text{2 NO}}_{\text{2}}\left(\text{g}\right)\rightleftharpoons {\text{N}}_{\text{2}}{\text{O}}_{\text{4}}\left(\text{g}\right)$K_p= 0.10
A pressure of 1 atm of N₂O₄(g) is placed in a container at this temperature. Predict which, if any, component (other than N₂O₄) will be present at a pressure greater than 0.2 atm at equilibrium.