A student is asked to sketch a pV diagram for a gas that goes through a cycle consisting...

A student is asked to sketch a pV diagram for a gas that goes through a cycle consisting of (a) an isobaric expansion, (b) a constant-volume reduction in temperature, and (c) an isothermal process that returns the gas to its initial state. The student draws the diagram shown in Figure Q12.24. What, if anything, is wrong with the student’s diagram?