Dependence of the density of solutions of alkali metal halides on the composition of methylpyrrolidone-water mixed solvents |
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| Authors: | A N Novikov O F Lenina V A Vasilev |
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| Institution: | (1) Novomoskovsk Institute, Mendeleev University of Chemical Engineering, Novomoskovsk, Russia;(2) Mendeleev University of Chemical Engineering, Miusskaya pl. 9, Moscow, 125190, Russia |
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| Abstract: | The densities of solutions of alkali metal halides in methylpyrrolidone (MP)-water mixtures were measured at 298.15 K over the entire range of mixed solvent compositions. The standard partial molar volumes of the electrolytes \(\overline {V_2^ \circ } \) were calculated. The \(\overline {V_2^ \circ } \) values of alkali metal halides in MP-H2O mixtures were related linearly to the \(\overline {V_2^ \circ } \) values in aqueous solutions. These dependences were used to determine the standard partial molar volumes of ions \(\overline {V_i^ \circ } \) in the mixtures studied. The standard partial molar volumes of transfer of the ions from water into MP-water mixtures were calculated. |
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