Problem 5.14: Use the SRK equation to calculate the following properties of isobutane:
a) Residual enthalpy and entropy at 10 bar, 300 K.
b) Enthalpy and entropy at 10 bar, 300 K using as reference state the saturated liquid at 1 bar (Tsat = 266 K).
c) Enthalpy and entropy at 10 bar, 300 K using as reference state the hypothetical ideal-gas state at 1 bar 266 K.
d) Enthalpy and entropy of vaporization at 1 bar.
The ideal-gas constant-pressure heat capacity may be taken to be constant and equal to 96.5 J/mol K.