Problem 2.60

Two thermally insulated vessels are interconnected by a tube equipped with a valve. One vessel of volume $V_{1}=10$ $\mathrm{l}$ contains $v=2.5$ moles of carbon dioxide. The other vessel of volume $V_{2}=$ 100 $\mathrm{l}$ is evacuated. The valve having been opened, the gas adiabatically expanded. Assuming the gas to obey the Van der Waals equation, find its temperature change accompanying the expansion.