Generalizing the Phase Rule

• William B. Jensen ^[1]
  1. [1] University of Cincinnati

     University of Cincinnati

     City of Cincinnati, Estados Unidos

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 78, Nº 10, 2001, pág. 1369
• Idioma: inglés
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• Resumen

  • This brief note calls attention to the literature discussing four pedagogical points relating to the application and teaching of the well-known Gibbs phase rule: (i) suggestions that the component term be broken into a species term, an equilibrated reaction term, and an independent stoichiometric constraint term; (ii) suggestions that the number of intensive fields be left as a variable rather than being automatically set at a value of two; (iii) debates on whether the rule needs further modification when dealing with optical enantiomers; and (iv) questions of whether textbook problems that ask students to predict the degrees of freedom ahead of time are realistic.