2018-05-182018-05-182010-07SANTOS, Michelly C. dos et al. Adsorção e propriedades de volume de misturas binárias água álcool: um experimento didático com base em medidas de tensão superficial. Química Nova, São Paulo, v. 33, n. 7, p. 1598-1602, jul. 2010.0100-4042e- 1678-7064http://repositorio.bc.ufg.br/handle/ri/15028An 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.porAcesso AbertoAlcohol-water mixturesAdsorption isothermPhysical chemistry lab courseArtigo