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Surface tension of electrolyte solutions: Comparing the effects of ionic dispersion forces and solvation

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Date

2006

Authors

Edwards, Scott
Williams, David

Journal Title

Journal ISSN

Volume Title

Publisher

Les Editions de Physique

Abstract

The Influence of salt on the surface tension of water is yet to be understood. We derive approximate analytical expressions for the influence of two different ion-specific effects on the surface tension of an electrolyte: the dispersion interaction between the ions and the air-water Interface, and the change in solvatlon energy of the ions as they approach the Interface. These formulae provide a simple means of comparing the relative importance of the two effects. We carry out such a comparison for the case of 1 M NaCl, and find that solvation is the dominant effect.

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Citation

URI

http://hdl.handle.net/1885/26240

Collections

ANU Research Publications

Source

Europhysics Letters

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1209/epl/i2006-10030-0

Restricted until

2037-12-31

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01_Edwards_Surface_tension_of_electrolyte_2006.pdf (127.73 KB)

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