Excess molar enthalpies for binary and ternary mixtures containing cyclic ether, 2-methylaniline and aromatic hydrocarbons

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• 作者：Sunil K. Jangra^a ; Neeti^a ; J.S. Yadav^b ; Dimple^c ; V.K. Sharma^a ; ^{v_sharmachem58@rediffmail.com}
• 关键词：Connectivity parameter of third degree of a molecule ; 3¦Î ; 1 ; 4-dioxane ; Excess molar enthalpies ; ; Interaction energy parameter ; ¦Öik ; Reduced volume
• 刊名：Thermochimica Acta
• 出版年：2012
• 出版时间：20 February, 2012
• 年：2012
• 卷：530
• 期：Complete
• 页码：25-31
• 全文大小：567 K

文摘

Excess molar enthalpies, , of 1,4-dioxane (i) + 2-methylaniline (j) + benzene or methylbenzene or 1,3-dimethylbenzene or 1,4-dimethylbenzene (k) ternary and of 1,4-dioxane (i) + 1,3-dimethylbenzene or 1,4-dimethylbenzene (k) binary mixtures have been measured as a function of composition at T = 308.15 K using 2-drop calorimeter. The resulting data have been fitted to Redlich-Kister equation to evaluate binary and ternary parameters along with their standard deviations. The observed data have been analyzed in terms of (a) Graph theory (which involve the topology of the mixtures constituents), and (b) Prigogine-Flory-Patterson theory. It has been observed that and values predicted by Graph theory compare well with their corresponding experimental values. However, although values calculated by Prigogine-Flory-Patterson theory are of same sign, the qualitative agreement is not impressive.