Exercise 3
N = 1 mole of an ideal monoatomic gas undergoes the following set of
transformations:
A ? B: irreversible isobaric expansion against an external pressure P =
5atm, $V_A$ = 2L and $V_B$ = 4L.
B ? C: free expansion with $V_C$ = 3$V_A$.
C ? D: reversible adiabatic transformation.
D ? A: reversible isothermal transformation.
1. Calculate the thermodynamical coordinates of the states A,B,C,D.
2. Draw the transformation in the PV plane.
3. Compute the internal energy variation for every transformation.
4. Compute the heat and the work exchanged in every transformation.
5. Compute the efficiency of the cycle.