An ideal gas undergoes a mechanically reversible process (constant pressure, constant
temperature and adiabatic process. The gas entering a T1=650K and P1=10bar decreases its
temperature at constant pressure where V2=2.91×10-3 m3
. Then, it went to isothermal process to
decrease its pressure. Finally, the gas returns to its initial state. Take Cp=7
2
ð and Cv==
5
2
ð .
Calculate the following:
a. T2,P3, V1 and V3
b. Q,W,ÎU and ÎH
