An ideal gas exists in a state with pressure P_0, volume V_0. It is isothermally expanded to 4 times of its initial volume ( V_0), then isobarically…

An ideal gas exists in a state with pressure $\displaystyle \mathrm{P}_0$, volume $\displaystyle \mathrm{V}_0$. It is isothermally expanded to $\displaystyle 4$ times of its initial volume $\displaystyle \left(\mathrm{V}_0\right)$, then isobarically compressed to its original volume. Finally the system is heated isochorically to bring it to its initial state. The amount of heat exchanged in this process is