Chemistry:Levich constant
From HandWiki
A Levich constant (B) is often used in order to simplify the Levich equation.[1] Furthermore, B is readily extracted from rotating disk electrode experimental data.
The B can be defined as:[2]
[math]\displaystyle{ B= (0.620) n F A D^\frac{2}{3}v^\frac{-1}{6}C }[/math]
where
- n is the number of moles of electrons transferred in the half reaction (number)
- F is the Faraday constant (C/mol)
- A is the electrode area (cm2)
- D is the diffusion coefficient (see Fick's law of diffusion) (cm2/s)
- v is the kinematic viscosity (cm2/s)
- C is the analyte concentration (mol/cm3)
References
- ↑ Bard, Allen; Faulkner, Larry (2000). Electrochemical Methods: Fundamentals and Applications. J. Wiley and Sons. ISBN 978-0-471-04372-0.
- ↑ Wiberg, Gustav K. H.; Zana, Alessandro (12 October 2016). "Levich Analysis and the Apparent Potential Dependency of the Levich B Factor". Analytical Letters 49 (15): 2397–2404. doi:10.1080/00032719.2016.1149188. ISSN 0003-2719.
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