One mole of ideal gas with cp = (5/2)r and cy = (3/2)r, is changed from p1 = 1 bar and v1 = 12 m3 to p2 = 12 bar and v2 = 1 m3 by mechanically reversible processes. the initial temperature, t1, is 300 k.
a. determine the internal energy change (au) and enthalpy change (ah). [2 marks]
b. if the above processes are carried out through an adiabatic compression and followed by cooling at constant volume:
isketch the processes in a single p-v diagram. [2 marks)
ii. determine the overall heat (q) and work (w) for the processes. (10 marks]
c. if the process is isothermal, determine the overall work (w) for the processes. sketch the isothermal process in the same p-v diagram of part (b)(i).