Any residual property is defined to be where IG denotes the same property in the ideal

Any residual property θ is defined to be

where IG denotes the same property in the ideal gas state. Such a quantity is also referred to as a departure function.

a. Develop general expressions for dH^res, dU^res, dS^res, and dG^res with temperature and pressure as the independent variables. 

b. Recognizing that as P → 0 all fluids become ideal gases, so that their residual properties are zero, develop explicit expressions for the residual properties H^res, U^res, S^res, and G^res as functions of temperature and pressure for the van der Waals equation of state. 

c. Repeat part (a) for the Peng-Robinson equation of state.

 

d. Repeat part (a) for the Redlich-Kwong equation of state.

Problems Involving the Redlich-Kwong Equation of State (6.35–6.48).

Transcribed Image Text:

res (T, P) = 0 (T, P) - 0¹G (T, P)