Please use this identifier to cite or link to this item: https://idr.l2.nitk.ac.in/jspui/handle/123456789/12776
Title: Refractive indices and isentropic compressibilities of glycylglycine- FeCl2 in aqueous ethanol mixtures
Authors: Santosh, M.S.
Bhat, D.K.
Issue Date: 2010
Citation: Journal of Chemical and Engineering Data, 2010, Vol.55, 11, pp.5365-5369
Abstract: The density and refractive index studies have been carried out for glycylglycine-FeCl2 in aqueous ethanol mixtures at four different temperatures in the range T = (288.15 to 318.15) K. A comparative study of the refractive indices obtained experimentally and those calculated by means of Gladstone-Dale and Lorentz-Lorenz relation has been made. Among them, the Gladstone-Dale equation afforded similar values to those obtained experimentally. Isentropic compressibilities, -S, and excess molar isentropic compressibilities, KS,mE, were estimated using the Kirkwood model. Using the Redlich-Kister type equations, excess partial molar isentropic compressibilities, KS,iE, were also obtained. The observed negative values of KS,2E in the water-rich region are due to the structural disorderliness. As infinitely dilute water is hydrogen-bonded to ethanol and glycylglycine, the variation of strength of interaction is not sensed by KS,1E,?. 2010 American Chemical Society.
URI: http://idr.nitk.ac.in/jspui/handle/123456789/12776
Appears in Collections:1. Journal Articles

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