Two kilograms of an ideal gas with constant c_p=1kJ/kgK and c_v= 0.7kJ/kgK are contained in an insulated piston-cylinder device with an initial volume of 0.3m³ and a pressure of 10bar. The piston is then allowed to move until the volume quadruples.

If the process is considered reversible, determine:

a) The temperature of the final state in K.

b) The work in kJ.

If irreversibilities during the process cause the entropy to increase by 0.1kJ/K, determine:

c) The temperature of the final state in K.

d) The work in kJ.

e) Sketch the reversible and irreversible processes in a T-s diagram.