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Title: Liquid Junction Potentials Across Aqueous Saturated Calomel Electrode/Some Aquo-organic Solvents Interface
Authors: Datta, Jayati
Sinha, Subrata
Kundu, Kiron K
Issue Date: Mar-1989
Publisher: NISCAIR-CSIR, India
Abstract: The liquid junction potentials (Ej) generated at the boundaries of saturated KCI solution of aqueous saturated calomel electrode [SCE (W)] and mixed aqueous organic solvents have been determined within the framework of tetraphenylarsonium tetraphenylboride (TATB) reference electrolyte extra-thermodynamic assumption. The organic solvents comprise protic methanol (MeOH) and ethanol (EtOH), aprotic dioxane (D) and dipolar aprotic acetonitriJe (ACN), N,N-dimethylformamide (DMF) and dimethyl sulphoxide (DMSO). The Ej values increase almost monotonically in the cases of DMF and DMSO and remain almost invariant till 50 wt % MeOH and EtOH, while in ACN and D, the values lie in between. The contribution to Ej values is mainly from difference of ion-solvent interactions in these mixed solvents, which becomes significant only in the organic-rich compositions.
Page(s): 197-201
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.28A(03) [March 1989]

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