Clapeyron equation general applicability

As is indicated by the examples given in Table 4.2, both methods (Eqs. 4-20 and 4-21) provide reasonable estimates of AvapSj(Tb). Such equations, along with the generally applicable integrated Clapeyron expression, establish a highly flexible means of estimating compound vapor pressures as a function of temperature (see Section 4.4 for examples). 

For one of the following liquids, detenu ine the heat of vaporization at its nonnal boiling point by application of tlie Clapeyron equation to the given vapor-pressine equation. Use generalized correlationsfrom Chap. 3 to estimate AV. 

Because the calorimetric methods of measurement of enthalpy of vapor formation are very difficult, the indirect mefliods are used, especially for less volatile substances. The application of generalized expression of the first and second laws of thermodynamics to the heterogeneous equilibrium between a condensed phase in isobaric- thermal conditions is given in the Clausius-Clapeyron equation that relates enthalpy of a vapor formation at the vapor pressure, P, and temperature, T. For one component system, the Clausius-Clapeyron equation has the form ... 

An equation of fundamental importance which finds extensive application in the one-component, two-phase systems, was derived by Clapeyron and independently by Clausius, from the Second law of thermodynamics and is generally known as the Clapeyron-Clausius equation. The two phases in equilibrium may be any of the following types ... 

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