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Effect of temperature and ionic strength on volumetric and acoustic properties of solutions of urea alkil derivatives in aqueous NaCl
Abstract
The present work was undertaken to study volumetric and acoustic properties for diluted solutions of tetramethylurea in pure water and for urea, n-propylurea, n-butylurea and tetramethylurea in 0.5 or 1 moldm3 aqueous solutions of sodium chloride. This paper presents measured values of densities and sound velocities at T = (288.15, 298.15 and 308.15) K. From these data the apparent molar volumes, , adiabatic compressibilities, S, and apparent molar adiabatic compressions, , were obtained. The values of apparent molar volumes for infinite dilution and limited apparent adiabatic compressions were calculated from extrapolation of the concentration dependence. Further, the corresponding transfer data as well as hydration number of urea and its derivatives in the studied systems were estimated. The obtained parameters are discussed in terms of various solute-solvent and solute-cosolute interactions.
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
JOURNAL OF CHEMICAL THERMODYNAMICS
no. 90,
pages 232 - 241,
ISSN: 0021-9614 - Language:
- Polish
- Publication year:
- 2015
- Bibliographic description:
- Krakowiak J., Wawer J.: Effect of temperature and ionic strength on volumetric and acoustic properties of solutions of urea alkil derivatives in aqueous NaCl// JOURNAL OF CHEMICAL THERMODYNAMICS. -Vol. 90, (2015), s.232-241
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.jct.2015.07.002
- Verified by:
- Gdańsk University of Technology
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