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Study of the heat of reversible adsorption at the air-solution interface. II. Experimental determination of the heat of reversible adsorption of some alcohols

par Vochten, R.;Pétré, Georges
Référence Journal of colloid and interface science, 42, 2, page (320-327)
Publication Publié, 1973-02

Article révisé par les pairs

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Résumé :

The surface tension of aqueous solutions of higher alcohols is measured as function of temperature at constant pressure and mole fraction. For all the studied alcohols a minimum in the σ (T) curves is obtained for sufficiently high concentrations, which minimum seems not to be explained by a solubility increase. The heat of reversible adsorption (or extension) is calculated for different temperatures following the procedure outlined in part I. The heat of reversible extension of the surface area vanishes at this minimum. © 1973.