Krishnamoorthy, P.V. and Venkatakrishnaiyer, S. (1991) Adsorption of ortho and para methoxy benzoic acids at the mercury/solution interface. Bulletin of Electrochemistry, 7 (2). pp. 98-102. ISSN 0256-1654

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Abstract

Adsorption of ortho and para methoxy benzoic acids at the mercury/0.1N Na2So4 solution interface has been studied using capillary electrometer. Electrocapillary curves have been obtained for various concentrations of these acid added to the base electrolyte (0.1N Na2So4 solution). Various thermodynamic parameters, like charge on the metal surface (qm) in the presense and the absense of absorbates, surface excess of organic molecules absorbed and coverage have been evaluated. The adsorption data obtained for both compounds have been tested both graphically and using a computer programme. T is found that both the compounds obey tenkin's asorption isotherm. From isotherm intercepts free energies of adsorptions have been evaluated at different values of qm. The variation of free energy with electrode charge is due to the interaction of adsorbed diopole with the metal surface.

Item Type:	Article
Uncontrolled Keywords:	adsorption; electrical double layer; o and p methoxy benzoic acids; electrocapillary curves
Subjects:	Electrodics and Electrocatalysis
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	21 May 2012 07:35
Last Modified:	21 May 2012 07:35
URI:	http://cecri.csircentral.net/id/eprint/2563

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