Thermodynamics of adsorption of primary alcohols at the liquid-air interface. Part 1.—Heats of adsorption at the quasi-saturated surface

Abstract

The temperature dependence of spreading pressure of the homologous series of primary alcohols C₄ to C₈ in aqueous solution has been determined over the complete range of bulk concentration. The enthalpy of adsorption from bulk aqueous solution to quasi-saturated surface has been calculated as approximately 2 kJ/mole per —CH₂—. There is evidence that, as the temperature is lowered, additional bond formation occurs in a surface saturated with alcohol molecules.