Chapter 19.3, Problem 19.3TYU

The system described in Fig. 19.7a undergoes four different thermodynamic processes. Each process is represented in a pV-diagram as a straight line from the initial state to the final state. (These processes are different from those shown in the pV-diagrams of Fig. 19.7.) Rank the processes in order of the amount of work done by the system, from the most positive to the most negative. (i) 1 → 2; (ii) 2 → 1; (iii) 3 → 4; (iv) 4 → 3.