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Structure of water-glycine solutions in saturated and near-saturated regions according to compressibility data

  • Proceedings of the 15th Symposium on Intermolecular Interactions and Conformations of Molecules Petrozavodsk, 2010, June 14–18
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Abstract

Ultrasonic velocity and density values are measured for aqueous solutions containing 2.00 mol.%, 4.00 mol.%, and 5.00 mol.% glycine in a temperature range of 15–65°C, 5.50 mol.% glycine (20–65°C), and 6.00 mol.% glycine (25–65°C). Adiabatic compressibilities (κS) and molar adiabatic compressibilities (KS) are calculated. The values of κS and KS decrease monotonically with an increase in glycine concentrations up to saturation at all the temperatures. The temperature dependences of κS and κS have minima that are typical of water and aqueous solutions; the positions of the minima depend on the glycine concentration. The temperature coefficients of the molar compressibility, ∂KS/∂T, change their signs from negative to positive at lower temperatures (by approximately 10 deg) than ∂κS/∂T.

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Authors and Affiliations

  1. Chemistry Department, M. V. Lomonosov Moscow State University, Moscow, Russia

    O. V. Grineva & E. V. Belyaeva

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  1. O. V. Grineva
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  2. E. V. Belyaeva
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Correspondence to O. V. Grineva.

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Original Russian Text Copyright © 2011 by O. V. Grineva and E. V. Belyaeva

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Translated from Zhurnal Strukturnoi Khimii, Vol. 52, No. 6, pp. 1176–1180, November–December, 2011.

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Grineva, O.V., Belyaeva, E.V. Structure of water-glycine solutions in saturated and near-saturated regions according to compressibility data. J Struct Chem 52, 1139–1143 (2011). https://doi.org/10.1134/S0022476611060199

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  • DOI: https://doi.org/10.1134/S0022476611060199

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