Chapter 2

Thermodynamic Properties of Ideal Systems

2.1 Equilibrium in a System of Several Components and Phases

With preliminaries out of the way we are ready to undertake a study of physical phenomena. We begin with the very severe restrictions placed on a system composed of several components distributed among a number of phases. The basic condition to be met requires that at equilibrium the Gibbs free energy be at a minimum, which condition will be realized below by requiring that the temperature, pressure, as well as the chemical potential of each component, be uniform throughout the system. Here we reintroduce the specialized meaning of components, as defined in Section 1.1. We also restrict ourselves to the performance of mechanical work; ...

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