Abstract
In the previous chapter, general expressions representing differential changes in internal energy, enthalpy, and entropy are developed. These equations are valid for gases, liquids, and solids and contain partial derivatives involving temperature, pressure, and molar volume. Evaluation of partial derivatives requires the equation of state to be specified. This chapter provides the background information on the commonly used equations of state. In that respect, the virial equation of state, cubic equations of state (van der Waals, Redlich–Kwong, Soave–Redlich–Kwong, and Peng–Robinson), and Lee–Kesler generalized correlation are explained.
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