Chapter 12, Problem 105CP

The partial pressures of an equilibrium mixture of N₂O₄(g) and NO₂(g) are $P_{{\text{N}}_{\text{2}}{\text{O}}_{\text{4}}}=0.34$ atm and ${\text{P}}_{{\text{NO}}_2}=1.20$ atm at a certain temperature. The volume of the container is doubled. Calculate the partial pressures of the two gases when a new equilibrium is established.