IUPAC > Gold Book > alphabetical index > E > extent of reaction, ξ


extent of reaction, ξ

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, divided by the Avogadro constant (it is essentially the amount of chemical transformations). The change in the extent of reaction is given by d ξ = d n B ν B, where ν B is the stoichiometric number of any reaction entity B (reactant or product) and d n B is the corresponding amount.
PAC, 1992, 64, 1569 (Quantities and units for metabolic processes as a function of time (IUPAC Recommendations 1992)) on page 1572
PAC, 1993, 65, 2291 (Nomenclature of kinetic methods of analysis (IUPAC Recommendations 1993)) on page 2295
Interactive Link Maps
First LevelSecond LevelThird Level
Cite as:
DOI of this term: doi:10.1351/goldbook.E02283.
Original PDF version: http://www.iupac.org/goldbook/E02283.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.
Current PDF version | Version for print | History of this term