On the Entropy Change of Surroundings of Finite and of Infinite Size:: From Clausius to Gibbs

• H. Frohlich ^[1]
  1. [1] Universite Paris
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 73, Nº 8 (August), 1996, págs. 716-717
• Idioma: inglés
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• Resumen

  • The entropy variation of finite surroundings induced by a chemical reaction is expressed in terms of the reaction enthalpy and the temperature change of the reacting system and of the variables of the surroundings. Expanding the surroundings to infinite size, the expression can be shown to reduce to the Gibbs equation, corresponding to the completely system-oriented entropy analysis. The reversibly calculated heat exchange of a thermal reservoir just equals the opposite irreversible reaction heat of the system.