A gas is described by the following equation of state RT-P(v-a)=bP/T with a = 15x10^-6 m^3/mol and b= 0.006 (m^3K)/mol a) From the above, obtain the equations for the calculation of residual enthalpy (HR/RT) b) The gas expands reversibly and adiabatically in a turbine (573 K and 10 bar) up to 1 bar. c) Determine the residual enthally for a gas that is at 573K and 10 bar. Take the heat capacity at constant pressure to be 3.5R.

Without using equations of gibbs