A gas obeys the following equation of state:

P(v-b) = RT

where the constant b was found to be 0.2 m³/kmol. Over the temperature range 300-400 K the heat capacity may be taken to be constant at 40 kJ/kmol K.

Calculate h and s for the following chance of state:

State 1: P = 10 Bar T = 300 K

State 2: P = 20 Bar T = 400 K

Show that:

- c_p is independent of pressure.

- The temperature increases in an adiabatic throttling process.