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Thermodynamics pp 139-150 | Cite as

Fugacity and Activity

  • N. A. Gokcen
  • R. G. Reddy

Abstract

It was shown earlier that the molar Gibbs energy of an ideal gas can be obtained by integrating dG = V dP = RT d In P at constant temperature; the result is
$$ G = G^ \circ \left( T \right) + RT\,In\,P;\quad \left[ {G^ \circ \left( T \right) = G^ \circ \left( {P = 1,T} \right)} \right] $$
(9.1)
where G is a function of both temperature and pressure but G° is only a function of temperature at a fixed standard pressure of one bar (one atm in older publications). The value of G cannot be determined experimentally but G - G° can be obtained from G - G° = RT ln P.

Keywords

Mole Fraction Gibbs Energy Activity Coefficient Virial Coefficient Standard Gibbs Energy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • N. A. Gokcen
    • 1
  • R. G. Reddy
    • 2
  1. 1.AlbanyUSA
  2. 2.The University of AlabamaTuscaloosaUSA

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