Artículos de revistas
Ion transfer of weak acids across liquid | liquid interfaces
Fecha
2016-08-12Registro en:
Vega Mercado, Franco; Zanotto, Franco Martín; Fernández, Ricardo Ariel; Dassie, Sergio Alberto; Ion transfer of weak acids across liquid | liquid interfaces; Elsevier Science Sa; Journal of Electroanalytical Chemistry; 774; 12-8-2016; 111-121
1572-6657
CONICET Digital
CONICET
Autor
Vega Mercado, Franco
Zanotto, Franco Martín
Fernández, Ricardo Ariel
Dassie, Sergio Alberto
Resumen
The main purpose of this paper is to develop a model for the ion transfer of weak acids across liquid | liquid interfaces including ion pairing and non-ideal electrolyte solutions to calculate the half-wave potential. The main equation derived in this model allows the simulation of different chemical systems, comprising multiple acid-base equilibria, hydrophilic and hydrophobic neutral weak acids, and different anions, including ion-pair formation in the organic phase. Hence, several representative chemical systems are analysed in detail in order to demonstrate the usefulness of the model. In addition, simple criteria to evaluate the presence of ion-pairs in the organic phase as well as the calculation of the apparent ion-pair formation constants are included.