Molar excess free energy of mixing of 1-propanol or 2-propanol + aromatic hydrocarbons at 308.15 K in terms of an association model with a Flory contribution term

Abstract

<span style="font-size:12.0pt;font-family: " times="" new="" roman";mso-fareast-font-family:"times="" roman";mso-ansi-language:="" en-in;mso-fareast-language:en-in;mso-bidi-language:ar-sa"="" lang="EN-IN">Excess molar Gibbs free energy of mixing for 1-propanol or 2-propanol + benzene, + toluene, + <i style="mso-bidi-font-style:normal">o<span style="mso-bidi-font-style:italic">-, m-</span></i>and <i>p</i>xylenes at 308.15 K are calculated by Barker's method from vapour pressure data measured by a static method. The free energy of mixing for these binary systems are also predicted in terms of Mecke-Kempter type of association model with Flory contribution term using two interaction parameters. The predicted value agrees reasonably well with the experimental values.</span>