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- W1977102210 abstract "Densities, ρ, and speeds of sound, u, of 2-propanone + dipropylamine, + dibutylamine or + triethylamine systems have been measured at (293.15, 298.15 and 303.15) K and atmospheric pressure using a vibrating tube densimeter and sound analyser Anton Paar model DSA-5000. The ρ and u values were used to calculate excess molar volumes, VE, and the excess functions at 298.15 K for the thermal expansion coefficient, αPE, and for the isentropic compressibility, KSE at 298.15 K. VE, KSE and αPE are positive magnitudes. When replacing dipropylamine by dibutylamine or triethylamine in the studied mixtures, the excess functions increase. This may be ascribed to the interactions between unlike molecules which are more important in the former solutions. From the comparison with similar data obtained for 2-propanone + aniline, + N-methylaniline, or + pyridine systems, it is concluded that interactions between unlike molecules are stronger in mixtures containing aromatic amines. Free volume effects are present in solutions with dipropyl or dibutylamine as the VE curves are shifted towards higher mole fractions of 2-propanone." @default.
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- W1977102210 date "2010-08-01" @default.
- W1977102210 modified "2023-10-18" @default.
- W1977102210 title "Thermodynamics of ketone+amine mixtures" @default.
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- W1977102210 doi "https://doi.org/10.1016/j.molliq.2010.05.022" @default.
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