On a PV diagram,2 curves are plotted,both starting at the same point and both ending at the same final increased volume.One curve is for an isothermal process;the other is for an adiabatic process.What does the area between these two curves represent?
A)Q absorbed by the isothermal process.
B)W done by the adiabatic process.
C)ΔU for the isothermal process.
D)Neither Q,W,nor ΔU for either of the processes is represented.

Question

Quizplus · Accepted Answer

The area between the two curves represents the difference in work done by the two processes. The isothermal process is done at constant temperature, so the work done is given by the area under the curve. The adiabatic process is done without heat transfer, so the work done is given by the area between the curve and the vertical axis. The difference between these two areas is the work done by the adiabatic process.

On a PV Diagram,2 Curves Are Plotted,both Starting at the Same