Density and viscosity of binary liquid systems of N-methylacetamide with aromatic ketones at T = 308.15 K |
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Affiliation: | 1. Departamento de Física Aplicada II, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain;2. Departamento de Física Aplicada I, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain;3. Departamento de Matemática Aplicada, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain |
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Abstract: | The densities and flow times of binary mixtures of N-methylacetamide with acetophenone, propiophenone, paramethyl acetophenone and parachloro acetophenone have been determined at T = 308.15 K and are employed to calculate the excess molar volumes, viscosities and deviations in viscosity over the entire range of mole fraction. All isotherms of VE as a function of composition of ketones show negative deviations except propiophenone, whereas all isotherms of Δη as a function of composition of ketones record negative deviations except parachloro acetophenone. The VE and Δη values are fitted to a Redlich–Kister type equation. The results are interpreted in terms of molecular interactions occurring in the solutions. |
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