The pseudocomponents are "lumps" of components (usually heavy ends) and the critical properties of the psuedocomponents are determined in the lab. I need to calculate ideal gas heat capacity/enthalpy for the "lump" to get to the enthalpy departure. I think the GPA has some sort of correlation...
Where can I find coefficients to calculate ideal gas heat capacities for psuedocomponents from critical pressure, critical temperature and molecular weight?
