Temperature dependence of the volumetric properties of binary mixtures containing oxaalkane +n-heptane期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Temperature dependence of the volumetric properties of binary mixtures containing oxaalkane +n-heptane

Authors:	J. Peleteiro C. A. Tovar R. Escudero E. Carballo J. L. Legido L. Romaní

Affiliation:	(1) Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Vigo, Campus de Orense, 32004 Orense, Spain;(2) Departmento de Física Aplicada, Facultad de Ciencias, Universidad de Vigo, Campus de Vigo, Vigo, Spain

Abstract:	Excess molar volumes of mixtures of n-heptane + 2,5-dioxahexane and n-heptane + 2,5,8-trioxanonane were determined from density measurentents at 5, 15, 25 and 35°C. These results allowed the following mixing quantities to be reported in all range of concentrations: , (v^E/T)_P and (h^E/P)_T, at 25°C. The obtained values were then compared with the calculated values by using the Flory theory and the Nitta-Chao theory of liquid mixtures. The results are discussed in terms of order or disorder creation.

Keywords:	Densities cubic expansion coefficient excess molar volumes 2,5-dioxahexane 2,5,8-trioxanonane n-heptane Flory theory Nitta-Chao model
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