Question

A sample of dry air has a temperature of 273 K, a volume of 4 m3 and a pressure of 2 atmospheres. The air parcel then undergoes the following changes: (a) warmed under constant pressure to 400 K, (b) cooled under constant volume to 200 K, (c) cooled under constant pressure to 100 K, and (d) warmed under constant volume to 300 K. (1) Sketch the process on a P-V diagram and mark the final values for pressure and volume after each change. (2) Calculate the total work done.

Answer 1