Air within a gas-piston assembly and initially at STP, (1atm, 300K), undergoes a thermodynamic cycle consisting of the following three processes: Process 1-2; isothermal compression to 2.5atm, Process 2-3; isobaric heating, Process 3-1, isochoric cooling.
Calculate the specific entropy change for each process, and generate the p-v and T-s diagrams (Use state 3 as the reference state)