Difference between revisions of "Charge number"

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Charge number

Description

The charge number of an ion B or electrochemical reaction with unit stoichiometric number of B is the particle charge [C·x^-1] divided by the elementary charge [C·x^-1]. The particle charge Q_{U_X} is the charge per ion B or per ion B transferred in the reaction as defined in the reaction equation. z_B is a positive integer.

Abbreviation: z_B

Reference: Gnaiger 2020 MitoPathways

Communicated by Gnaiger Erich 2020-11-23

A canonical comment on the IUPAC definition

IUPAC (Cohen 2008 IUPAC Green Book) defines the charge number as

z_B = Q_B·e^-1

Therefore, Q_B = z_B∙e. The subscript in Q_B indicates per elementary entity B. This is opposite to the subscript in V_B as the symbol for the volume of a substance of type B (e.g. V_O₂ [L]). For consistency with this convention, the symbol Q_elB or Q_elX is used for indicating charge of a substance of type B or X [C], distinguished from particle charge as the quantity of charge per elementary entity X with symbol Q_{U_X} [C∙x-1]. To avoid too long and multiple subscript levels, Q_UX is used instead of Q_{U_X}, and the "el" is dropped from Q_{elU_X}. The particle charge Q_UH⁺ of the proton is defined as elementary charge e. Therefore, the charge number of the proton is z_H⁺ = Q_UH⁺/e = 1.

References

Bioblast link	Reference	Year
Cohen 2008 IUPAC Green Book	Cohen ER, Cvitas T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor HL (2008) Quantities, Units and Symbols in Physical Chemistry. IUPAC Green Book 3rd Edition, 2nd Printing, IUPAC & RSC Publishing, Cambridge.	2008
Gnaiger 2020 BEC MitoPathways	Gnaiger E (2020) Mitochondrial pathways and respiratory control. An introduction to OXPHOS analysis. 5^th ed. Bioenerg Commun 2020.2. https://doi.org/10.26124/bec:2020-0002	2020
BEC 2020.1 doi10.26124bec2020-0001.v1	Gnaiger E et al ― MitoEAGLE Task Group (2020) Mitochondrial physiology. Bioenerg Commun 2020.1. https://doi.org/10.26124/bec:2020-0001.v1	2020

MitoPedia concepts: Ergodynamics

@@ Line 1: / Line 1: @@
 {{MitoPedia
 |abbr=''z''<sub>B</sub>
-|description=The '''charge number''' of an ion B or electrochemical reaction with unit stoichiometric number of B is the [[charge]] divided by the [[elementary charge]] of the ion or of electrons transferred in the reaction as defined in the reaction equation. ''z'' is a positive integer.
+|description=The '''charge number''' of an ion B or electrochemical reaction with unit stoichiometric number of B is the particle charge [C·x<sup>-1</sup>] divided by the [[elementary charge]] [C·x<sup>-1</sup>]. The particle charge ''Q''<sub>''U''<sub>X</sub></sub> is the charge per ion B or per ion B transferred in the reaction as defined in the reaction equation. ''z''<sub>B</sub> is a positive integer.
+|info=[[Gnaiger 2020 MitoPathways]]
+}}
+ Communicated by [[Gnaiger Erich]] 2020-11-23
+== A canonical comment on the IUPAC definition ==
+:::: IUPAC ([[Cohen 2008 IUPAC Green Book]]) defines the charge number as
   ''z''<sub>B</sub> = ''Q''<sub>B</sub>·''e''<sup>-1</sup>
-|info=[[Cohen 2008 IUPAC Green Book]]
+:::: Therefore, ''Q''<sub>B</sub> = ''z''<sub>B</sub>∙''e''. The subscript in ''Q''<sub>B</sub> indicates per elementary entity B. This is opposite to the subscript in ''V''<sub>B</sub> as the symbol for the volume of a substance of type B (e.g. ''V''<sub>O<sub>2</sub></sub> [L]). For consistency with this convention, the symbol ''Q''<sub>elB</sub> or ''Q''<sub>el''X''</sub> is used for indicating charge of a substance of type B or ''X'' [C], distinguished from particle charge as the quantity of charge per elementary entity ''X'' with symbol ''Q''<sub>''U''<sub>''X''</sub></sub> [C∙x-1]. To avoid too long and multiple subscript levels, ''Q''<sub><u>''U''</u>''X''</sub> is used instead of ''Q''<sub>''U''<sub>''X''</sub></sub>, and the "el" is dropped from ''Q''<sub>el''U''<sub>''X''</sub></sub>. The particle charge ''Q''<sub><u>''U''</u>H<sup>+</sup></sub> of the proton is defined as elementary charge ''e''. Therefore, the charge number of the proton is ''z''<sub>H<sup>+</sup></sub> = ''Q''<sub><u>''U''</u>H<sup>+</sup></sub>/''e'' = 1.
-}}
 == References ==