A thermochemical study of aqueous solutions of sodium naproxene |
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| Authors: | N G Manin A Fini G L Perlovich |
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| Institution: | (1) Institute of the Solution Chemistry, Russian Academy of Sciences, Ivanovo, Russia;(2) Ivanovo State University of Chemical Technology, Ivanovo, Russia;(3) Institute of Chemical Sciences, Bologna University, Bologna, Italy |
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| Abstract: | The enthalpies of solution of sodium naproxene and dilution of its aqueous solutions were measured on an isoperibolic calorimeter at 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15 K. The maximum content of the electrolyte was determined by its solubility at the given temperature (0.038–0.083 mol/kg solvent). The Pitzer model was used to obtain the virial coefficients for calculations of many excess thermodynamic properties of both solutions and their components. Changes in these characteristics depending on the concentration and temperature are considered. |
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