Chapter 3, Problem 3.22E

Consider a monatomic ideal gas in a piston chamber, where the initial volume is $2.00\text{L}$ and the initial pressure is $8.00\text{atm}$. Assume that the piston is moving up (that is, the system is expanding) to a final volume of $5.50\text{L}$ against a constant external pressure of $1.75\text{atm}$. Also assume a constant temperature of $25.0°\text{C}$ for the process. Calculate $\Delta S_{\text{sys}},\Delta S_{\text{surr}},$ and $\Delta S_{\text{univ}}$ for the process.