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Partial molar volumes of components of water – aliphatic alcohol mixtures

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Abstract

In this work we used results of p,Vm,T,x-measurements of water – alcohol mixtures (methanol, ethanol and 1-propanol) with x = 0.2, 0.5, 0.8 in the range of temperatures 613.15–653.15 К and pressures 20–50 MPa for calculation of partial molar volumes. The dependence of molar volume on concentration Vm = f(p,x)T is described by a polynomial equation with relative deviation 0.5%. A characteristic feature for all of three studied mixtures is that an insignificant growth of the partial molar volumes of water and a decrease of the partial molar volumes of the alcohols take place with increasing alcohol concentration. Water – hydrocarbon mixtures in the critical state have a similar character of the dependence of partial molar volume on concentration.

About the Authors

B. K. Karabekova
Institute of Problems of Geothermy, Daghestan Scientific Center RAS, Makhachkala, 367003
Russian Federation


A. R. Bazaev
Institute of Problems of Geothermy, Daghestan Scientific Center RAS, Makhachkala, 367003
Russian Federation


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For citation:


Karabekova B.K., Bazaev A.R. Partial molar volumes of components of water – aliphatic alcohol mixtures. Fine Chemical Technologies. 2013;8(6):47-53. (In Russ.)

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ISSN 2410-6593 (Print)
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