Difference between revisions of "Chemical potential"
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{{MitoPedia | {{MitoPedia | ||
|abbr=''µ'' | |abbr=''µ'' | ||
|description=The '''chemical potential''' of a substance B, ''µ''B [J/mol], is the partial derivative of Gibbs energy, ''G'' [J], per amount of B, ''n''B [mol], at constant temperature, pressure, and composition other than that of B, | |description=The '''chemical potential''' of a substance B, ''µ''<sub>B</sub> [J/mol], is the partial derivative of Gibbs energy, ''G'' [J], per amount of B, ''n''<sub>B</sub> [mol], at constant temperature, pressure, and composition other than that of B, | ||
''µ''B = ( | ''µ''<sub>B</sub> = (∂''G''/∂''n''<sub>B</sub>)<sub>''T'',''p'',''n<small>j''≠B</small></sub> | ||
The chemical potential of a [[solute]] in solution is the sum of the standard chemical potential measured under defined standard conditions and a concentration ([[activity]])-dependent term, | The chemical potential of a [[solute]] in solution is the sum of the standard chemical potential measured under defined standard conditions and a concentration ([[activity]])-dependent term, | ||
''µ''B = ''µ'' | ''µ''<sub>B</sub> = ''µ''<sub>B</sub>° + ''RT'' ln(''a''<sub>B</sub>) | ||
The standard state for the solute is refered to ideal behaviour at standard concentration, ''c''° = 1 mol/L, exhibiting infinitely diluted solution behaviour. | The standard state for the solute is refered to ideal behaviour at standard concentration, ''c''° = 1 mol/L, exhibiting infinitely diluted solution behaviour. | ||
|info=[[Cohen 2008 IUPAC Green Book]] | |info=[[Cohen 2008 IUPAC Green Book]] | ||
}} | }} | ||
Communicated by [[Gnaiger E]] 2018-10-18 | |||
{{MitoPedia concepts | {{MitoPedia concepts | ||
|mitopedia concept=Ergodynamics | |mitopedia concept=Ergodynamics | ||
}} | }} | ||
Revision as of 11:13, 18 October 2018
- high-resolution terminology - matching measurements at high-resolution
Chemical potential
Description
The chemical potential of a substance B, µB [J/mol], is the partial derivative of Gibbs energy, G [J], per amount of B, nB [mol], at constant temperature, pressure, and composition other than that of B,
µB = (∂G/∂nB)T,p,nj≠B
The chemical potential of a solute in solution is the sum of the standard chemical potential measured under defined standard conditions and a concentration (activity)-dependent term,
µB = µB° + RT ln(aB)
The standard state for the solute is refered to ideal behaviour at standard concentration, c° = 1 mol/L, exhibiting infinitely diluted solution behaviour.
Abbreviation: µ
Reference: Cohen 2008 IUPAC Green Book
Communicated by Gnaiger E 2018-10-18
MitoPedia concepts: Ergodynamics
