Chemistry - Thermodynamics - I Question with Solution | TestHub

An ideal gas, ${\overline{\mathrm{C}}}_{\mathrm{v}}=\frac{5}{2}\mathrm{R}$, is expanded adiabatically against a constant pressure of 1 atm untill it doubles in volume. If the initial temperature and pressure is $298\mathrm{K}$ and $5\mathrm{atm}$, respectively then the final temperature is _______ $\mathrm{K}$ (nearest integer). [${\overline{\mathrm{C}}}_{\mathrm{v}}$ is the molar heat capacity at constant volume]