ABSTRACT

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This chapter introduces a general principle that is the basis for determining the

internal condition of the most complex kind of thermodynamic system when it

reaches its equilibrium state. This general criterion for equilibrium has the same

level of importance in the development of thermodynamics as do the laws

themselves, as implied in Figure 1.4. It is the foundation that provides the strategy

for the calculation equilibrium maps: phase diagrams, chemical equilibria in

predominance diagrams without and with electrical effects, the role played by

capillarity effects, the chemistry of defects in crystals, as well as the primary results

of statistical thermodynamics. These applications of this criterion occupy most of

the rest of this text.