title: Partial Molar Volumes of 15-Crown-5 Ether in Mixtures ofN,N-Dimethylformamide with Water.
abstract: The density of 15-crown-5 ether (15C5) solutions in the mixtures ofN,N-dimethylformamide (DMF) and water (H2O) was measured within the temperature range 293.15-308.15 K using an Anton Paar oscillatory U-tube densimeter. The results were used to calculate the apparent molar volumes (VΦ) of 15C5 in the mixtures of DMF + H2O over the whole concentration range. Using the apparent molar volumes and Redlich and Mayer equation, the standard partial molar volumes of 15-crown-5 were calculated at infinite dilution ([Formula: see text]). The limiting apparent molar expansibilities (α) were also calculated. The data are discussed from the point of view of the effect of concentration changes on interactions in solution.
authors.affiliation: Department of Physical Chemistry, University of Lodz, Pomorska 165, 90-236 Lodz, Poland.
authors.forename: Magdalena
authors.initials: M
authors.lastname: Tyczyńska
authors.affiliation: Department of Physical Chemistry, University of Lodz, Pomorska 165, 90-236 Lodz, Poland.
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Jóźwiak
keywords: 15-Crown-5; Density; Hydrophobic hydration; N,N-Dimethylformamide–water mixture; Partial molar volume