adsorção e propriedades de volume de misturas binárias água álcool: um experimento didático com base em medidas de tensão superficial an undergraduate experiment in physical chemistry: adsorption and bulk properties of alcohol-water mixtures based on surface tension measurements

Clicks: 181
ID: 259976
2010
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Abstract
An undergraduate physical chemistry experiment based on the drop counting method for surface tension measurements is proposed to demonstrate adsorption isotherms of binary aqueous solutions of ethanol, n-propanol, and n-butanol. Excess surface is obtained by the derivative of surface tension taken with respect to alcohol activity, after this activity calculation using van Laar equation. Laboratory class contents are surface tension, excess surface, percolation of hydrogen bonds, micelle, activity, and ideal solution.
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Authors ;Michelly C. dos Santos;Aline P. Moraes;Maykon A. Lemes;Emília C. D. Lima;Anselmo E. de Oliveira
Journal greece and rome
Year 2010
DOI
10.1590/S0100-40422010000700031
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000700031
Keywords
adsorption isotherm physical chemistry lab coursechemistry

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