Enthalpy characteristics of dilute solutions of acetonitrile |
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Authors: | M V Kulikov |
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Institution: | (1) Institute of Chemistry of Non-Aqueous Solutions, Russian Academy of Sciences, 1 ul. Akademicheskaya, 153045 Ivanovo, Russian Federation |
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Abstract: | The enthalpies of mixing of acetonitrile with formamide,N-methylformamide,N,N-dimethylformamide, and hexamethylphosphoric triamide were measured in the temperature interval from 283.15 to 328.15 K. The
enthalpy coefficients of binary and ternary interactions were calculated by the methods of the McMillan-Mayer theory. The
contributions to the enthalpy of solution due to the formation of a cavity in the solvent, Δcav
H°, and those due to the interaction of the solute with the solvent, Δint
H°, were determined. The enthalpies of the specific and non-specific solvation of acetonitrile in the corresponding amides
were calculated. Specific interactions were found to contribute the most to the solvation enthalpy of acetonitrile. The obtained
values were compared with analogous values for solutions of acetonitrile in water and alcohols.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 289–293, February, 1997. |
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Keywords: | enthalpy of mixing enthalpy of solution coefficients of binary interaction acetonitrile formamide N-methylformamide N N-dimethylformamide hexamethylphosphoric triamide |
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