Internal Energy, Enthalpy, and Specific Heat of Ideal Gases


The quantities uA, uB, hA, hB, are the ideal gas properties of the components at the temperature of the mixture. For a process involving a change of temperature, the changes in these values may be evaluated by using (1) ideal gas tables, (2) use an analytical equation for Cp0 as a function of temperature (Cp0 = C0 + C1θ + C2θ2 + C3θ3 and getting the C and θ values from constant-pressure specific heats of various ideal gases table), or (3) integrate the results of the calculations of statistical thermodynamics from an arbitrary reference temperature to any other temperature T and to define a function.