Description
In an isomorphic analysis, any form of flow is the advancement of a process per unit of time, expressed in a specific motive unit [MUβs-1], e.g., ampere for electric flow or current [Aβ‘Cβs-1], watt for heat flow [Wβ‘Jβs-1], and for chemical flow the unit is [molβs-1] (extent of reaction per time). The corresponding motive forces are the partial exergy (Gibbs energy) changes per advancement [JβMU-1], expressed in volt for electric force [Vβ‘JβC-1], dimensionless for thermal force [JβJ-1], and for chemical force the unit is [Jβmol-1], which deserves a specific acronym ([Jol]) comparable to volt. For chemical processes of reaction and diffusion, the advancement is the amount of motive substance [mol]. The concept was originally introduced by De Donder [1]. Central to the concept of advancement is the stoichiometric number, Ξ½X, associated with each motive component X (transformant [2]).
In a chemical reaction, r, the motive entity is the stoichiometric amount of reactant, drnX, with stoichiometric number Ξ½X. The advancement of the chemical reaction, drΞΎ [mol], is then defined as
drΞΎ = drnXΒ·Ξ½X-1
The flow of the chemical reaction, Ir [molΒ·s-1], is advancement per time,
Ir = drΞΎΒ·dt-1
Abbreviation: dtrΞΎ
Reference: Gnaiger (1993) Pure Appl Chem
Communicated by Gnaiger E 2018-10-16
- Β» Advancement per volume, dtrY = dtrΞΎβV-1
References
- De Donder T (1936) Thermodynamic theory of affinity: a book of principles. Oxford, England: Oxford University Press.
- Gnaiger E (1993) Nonequilibrium thermodynamics of energy transformations. Pure Appl Chem 65:1983-2002. - Β»Bioblast linkΒ«
MitoPedia concepts:
MiP concept,
Ergodynamics