Understanding Chemical Equilibrium Using Entropy Analysis:: The Relationship Between ΔStot(syso) and the Equilibrium Constant

• Thomas H. Bindel ^[1]
  1. [1] Pomona High School, Colorado
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 87, Nº 7 (July), 2010, págs. 694-699
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Entropy analyses as a function of the extent of reaction are presented for a number of physicochemical processes, including vaporization of a liquid, dimerization of nitrogen dioxide, and the autoionization of water. Graphs of the total entropy change versus the extent of reaction give a visual representation of chemical equilibrium and the second law of thermodynamics. The mathematical relationship between the total entropy change for the system under standard-state conditions and the equilibrium constant is derived exclusively from entropy analysis.