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Excess molar volumes and excess viscosities for mixtures of N,N-dimethylformamide with methanol, ethanol and 2-propanol at different temperatures

✍ Scribed by M.M.H. Bhuiyan; M.H. Uddin

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
339 KB
Volume
138
Category
Article
ISSN
0167-7322

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✦ Synopsis

Densities and viscosities for mixtures of N,N-dimethylformamide (DMF) with methanol, ethanol, and 2-propanol were measured as a function of mole fraction at (303.15, 308.15, 313.15, 318.15, 323.15) K and atmospheric pressure. From the measurements, excess molar volumes (V m E ), excess viscosities (Ξ· E ), and Grunberg and Nissan interaction parameters (Ι›) were calculated. The excess parameters were fitted to the Redlich-Kister equation. Excess molar volumes (V m E ) were found to be negative throughout the whole range of composition for all the three systems. The excess viscosities and interaction parameters of the DMF + methanol system were found to be positive whereas the values were negative for the other systems over the entire concentration range.

πŸ“œ SIMILAR VOLUMES

Excess molar volumes for binary and tern
Excess molar volumes for binary and ternary mixtures of (N,N-dimethylformamide+ethanol+water) at the temperature 298.15 K
✍ Tong-Chun Bai; Jia Yao; Shi-Jun Han πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 206 KB

The results of excess molar volumes for the ternary mixture N, N-dimethylformamide Ε½ . 4 Ε½ . Ε½ DMF q ethanol q water , and for the binary constituents DMF q water , DMF q . Ε½ . ethanol , and ethanol q water at T s 298.15 K were reported. Several empirical expressions were used to predict and correla