2. Activities and concentrations
Thermodynamics shows that the potential adopted by an indicator electrode in a potentiometric chain is related to the activity a i of the ion i to which the electrode responds. Activity, a thermodynamic quantity, is related to concentration, an experimental quantity, via the activity coefficient γ i by the relationship :
with :
- a i :
- (mol · L...
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Activities and concentrations
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Bibliography
- (1) - CONWAY (B.E.) - Ionic interactions and activity behavior of electrolyte solutions (Interactions ioniques et activité dans les solutions d'électrolyte). - Chap. 2, p. 111-222. Dans CONWAY (B.E.), BOCKRIS (J.O'M.) et YEAGER (E.). – Comprehensive treatise of electrochemistry (Traité complet d'électrochimie). Plenum Press, New York, vol. 5,...
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