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Extent of reaction
In chemistry, the extent of reaction ξ is an extensive quantity describing the progress of a chemical reaction equal to the number of chemical transformations, as indicated by the reaction equation on a molecular scale. [1] The variable was introduced by Belgian mathematical physicist Théophile de Donder in 1920. [3]
The extent of reaction is essentially the amount of chemical transformations. The extent of reaction also goes by various other names such as reaction coordinate ε or degree of advancement, degree of reaction, and progress variable, all of which characterize the extent or degree to which a reaction has taken place. [2]
References
1. Extent of reaction – IUPAC Gold Book.
2. Smith, J.M. Van Ness, H.C., and Abbott, M.M. (2005). Introduction to Chemical Engineering Thermodynamics (7th ed.), (pg. 485). New York: McGraw-Hill Book Co. Inc.
3. (a) De Donder, Théophile. (1920). Lecons de Thermodynamique et de Chemie Physique (Lessons of Thermodynamics and Physical Chemistry), (pg. 117, formula 318). Paris: Gauthier-Villars.
(b) De Donder, T. (1936). Thermodynamic Theory of Affinity: A Book of Principles, (pg. 2). Oxford: Oxford University Press.
The extent of reaction is essentially the amount of chemical transformations. The extent of reaction also goes by various other names such as reaction coordinate ε or degree of advancement, degree of reaction, and progress variable, all of which characterize the extent or degree to which a reaction has taken place. [2]
References
1. Extent of reaction – IUPAC Gold Book.
2. Smith, J.M. Van Ness, H.C., and Abbott, M.M. (2005). Introduction to Chemical Engineering Thermodynamics (7th ed.), (pg. 485). New York: McGraw-Hill Book Co. Inc.
3. (a) De Donder, Théophile. (1920). Lecons de Thermodynamique et de Chemie Physique (Lessons of Thermodynamics and Physical Chemistry), (pg. 117, formula 318). Paris: Gauthier-Villars.
(b) De Donder, T. (1936). Thermodynamic Theory of Affinity: A Book of Principles, (pg. 2). Oxford: Oxford University Press.
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