From Eqs. 6.2-18 and 6.2-20, we have the following as definitions of the heat capacities at constant
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From Eqs. 6.2-18 and 6.2-20, we have the following as definitions of the heat capacities at constant volume and constant pressure:
More generally, we can define a heat capacity subject to some other constraint X by
One such heat capacity of special interest is CLV, the heat capacity along the vapor-liquid equilibrium line.
a. Show that
where αi is the coefficient of thermal expansion for phase i (liquid or vapor), CiP is its constantpressure heat capacity, Vi is its molar volume, and ΔvapH and ΔvapV are the molar enthalpy and volume changes on vaporization.
b. Show that
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Related Book For
Chemical Biochemical And Engineering Thermodynamics
ISBN: 9780470504796
5th Edition
Authors: Stanley I. Sandler
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