Application of the Le Chatelier principle on gas reactions

Zi Kui Liu, John Ågren, Mats Hillert

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Le Chatelier's principle has been the subject of much discussion and controversy because it sometimes seems to give the wrong predictions. A classic example is the ammonia gas reaction. The principle is now re-examined, starting from a strict and general derivation given recently. A chemical reaction in a gas mixture is then considered and the conditions are derived under which a chemical reaction will increase the amount of a type of molecule but decrease its chemical potential, a case which has caused confusion. It is demonstrated that there are no exceptions to Le Chatelier's principle if applied to infinitesimal changes of an equilibrium system. However, finite changes may violate the principle. The conditions are given under which this may occur in a gas mixture. The mathematical formulation of the principle is transformed to a form lending itself to quantitative calculations.

Original languageEnglish (US)
Title of host publicationZentropy
Subtitle of host publicationTools, Modelling, and Applications
PublisherJenny Stanford Publishing
Pages587-601
Number of pages15
ISBN (Electronic)9781040118566
ISBN (Print)9789815129441
StatePublished - Aug 23 2024

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Physics and Astronomy
  • General Chemistry
  • General Agricultural and Biological Sciences
  • General Biochemistry, Genetics and Molecular Biology
  • General Medicine
  • General Chemical Engineering

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