A container has two chambers of volumes V_1=2 litres and V_2=3 litres separated by a partition made of a thermal insulator. The chambers contains…

A container has two chambers of volumes $\displaystyle V_1=2$ litres and $\displaystyle V_2=3$ litres separated by a partition made of a thermal insulator. The chambers contains $\displaystyle n_1=5$ and $\displaystyle n_2=4$ moles of ideal gas at pressures $\displaystyle p_1=1 \mathrm{~atm}$ and $\displaystyle p_2=2 \mathrm{~atm}$, respectively. When the partition is removed, the mixture attains an equilibrium pressure of :