Question

0.2 m3 of an ideal gas at a pressure of 2000kpa and 327 C is expanded isothermally to initial volume it is then cooled to 25 C at constant volume and then compresses back polytropically toits intial state.Determine net work done

Answer 1

$W1−2 = P1V1 ln \frac{V2}{V1}$

=  (2000 kP a)(0.01341 m3)) in$\frac{0.05365}{0.01341}$

= = 37.2 kJ