Density and excess molar volumes of binary mixtures of sulfolane with methanol,n-propanol,n-butanol, andn-pentanol at 298.15–323.15 K and atmospheric pressure
| Autor: | Shila Sultana, M. Azhar Ali, M. A. Motin |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Atmospheric pressure
Chemical polarity Analytical chemistry Condensed Matter Physics Mole fraction Electronic Optical and Magnetic Materials chemistry.chemical_compound Molar volume chemistry n-Butanol Materials Chemistry Molecule Organic chemistry Methanol Sulfolane Physical and Theoretical Chemistry |
| Zdroj: | Physics and Chemistry of Liquids. 45:221-229 |
| ISSN: | 1029-0451 0031-9104 |
| Popis: | Densities, ρ and excess molar volumes, V E of the binary mixtures of sulfolane, +methanol, +n-propanol, +n-butanol, and +n-pentanol were measured at temperatures 298.15, 303.15, 308.15, 313.15, and 318.15 K, respectively, covering the whole composition range except methanol at 303.15–323.15 K. The V E for the systems were found to be negative and large in magnitude. The values of V E of the sulfolane, +n-butanol and sulfolane, +n-pentanol mixtures are being positive at lower and higher mole fractions of the alkanols (x 2). The magnitudes of the V E values of the mixtures are in the order sulfolane + methanol > sulfolane + n-propanol > sulfolane + n-butanol > sulfolane + n-pentanol. The observed values of V E for the mixtures have been explained in terms of (i) effects due to the differences in chain length of the alcohols, (ii) dipole–dipole interactions between the polar molecules, and (iii) geometric effect due to the differences in molar volume of the component molecules. These are more noticeable in t... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |