Extremes in Dependences of Enthalpy and Entropy of Saturated Vapour on Temperature

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Title:Extremes in Dependences of Enthalpy and Entropy of Saturated Vapour on Temperature
Creators:
Novák, Josef P.
Malijevský, Anatol
Dědek, Jaroslav
Oldřich, Jiří
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 62, 5, pp. 679-695
Uncontrolled Keywords:Enthalpy, Entropy, Saturated vapour

Abstract

It was proved that the enthalpy of saturated vapour as a function of temperature has a maximum for all substances. The dependence of the entropy of saturated vapour on temperature can be monotonous, has a minimum and a maximum, or has only a maximum. The thermodynamic relations were derived for the existence of the extremes which enable their computation from the knowledge of dependence of the ideal-gas heat capacity on temperature and an equation of state. A method based on the theorem of corresponding states was proposed for estimating the extremes, and its results were compared with literature data. The agreement between the literature and estimated temperatures corresponding to the extremes is very good. The procedure proposed can serve for giving precision to the <i>H</i>-<i>p</i> and <i>T</i>-<i>S</i> diagrams commonly used in applied thermodynamics.

Title:Extremes in Dependences of Enthalpy and Entropy of Saturated Vapour on Temperature
Creators:
Novák, Josef P.
Malijevský, Anatol
Dědek, Jaroslav
Oldřich, Jiří
Uncontrolled Keywords:Enthalpy, Entropy, Saturated vapour
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:62
Number:5
Page Range:pp. 679-695
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19970679UNSPECIFIED
ID Code:1150
Item Type:Article
Deposited On:06 Feb 2009 17:07
Last Modified:06 Feb 2009 16:07

Citation

Novák, Josef P.; Malijevský, Anatol; Dědek, Jaroslav; Oldřich, Jiří (1997) Extremes in Dependences of Enthalpy and Entropy of Saturated Vapour on Temperature. Collection of Czechoslovak Chemical Communications, 62 (5). pp. 679-695. ISSN 0010-0765

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