Densimetric Studies of Binary Solutions Involving H2O or D2O as a Solute in Dimethylsulfoxide at Temperatures from (293.15 to 328.15) K and Atmospheric Pressure |
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| Authors: | Evgeniy V. Ivanov Elena Yu. Lebedeva Vladimir K. Abrosimov Nadezhda G. Ivanova |
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| Affiliation: | 1. The Laboratory of Thermodynamics of Solutions of Non-electrolytes and Biologically Active Substances, Institute of Solution Chemistry, Russian Academy of Sciences, 1 Akademicheskaya Street, 153045, Ivanovo, Russian Federation
2. The Department of Chemistry and Chemical Technologies in Energetics, Ivanovo??s State Power Engineering University, 34 Rabfakovskaya Street, 153003, Ivanovo, Russian Federation
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| Abstract: | Densities of H2O and D2O solutions in dimethylsulfoxide, with solute mole fractions ranging up to 0.037, were measured with an uncertainty of 1.5×10?5?g?cm?3 at eight temperatures between 293.15 and 328.15?K (with a step of 5?K) under atmospheric pressure using a sealed vibrating-tube densimeter. Apparent molar volumes and isobaric expansibilities (down to infinite dilution) of water isotopologues, as well as excess molar volumes of both solutes and solutions as a whole, were calculated. The temperature-dependent behavior of H2O??D2O solute isotope effects on the studied molar volumetric characteristics was interpreted by taking into account the structural and related interaction peculiarities of the dissolving medium in question. |
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