A piston-cylinder device contains 1 kg of hydrogen at 100 kPa, 30oC (use the IG system state daemon). The gas is now compressed in such a manner that the entropy (s) remains constant.
(a) Calculate the temperature when the volume becomes half the original volume.
(b) Calculate a series of states using the as the volume decreases from the initial value to one tenth of the initial volume. Plot how the pressure of the gas changes as a function of volume. Compare the plot with the isothermal curve of problem 1-2-15 [PC].