Acoustic, thermodynamic, viscometric and volumetric studies in binary systems of 1-decanol with n-hexane, n-octane and n-decane with respect to temperature
✍ Scribed by Gyan P. Dubey; Monika Sharma
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 360 KB
- Volume
- 143
- Category
- Article
- ISSN
- 0167-7322
No coin nor oath required. For personal study only.
✦ Synopsis
Densities, ρ, viscosities, η, and speeds of sound, u of pure 1-decanol, C 10 H 21 OH, n-hexane, C 6 H 14 , n-octane, C 8 H 18 , n-decane, C 10 H 22 and their binary mixtures with 1-decanol as a common component, were measured at 298.15, 303.15 and 308.15 K over the entire composition range. These experimental data were used to calculate the values of excess molar volumes, V m E , excess molar isentropic compressibility, K s,m E , deviation u D of the speeds of sound from the values u id calculated for ideal mixtures, Gibbs excess free energy of activation of viscous flow, ΔG ⁎E , free volume, V f , free length, L f , acoustic impedance, Z, molar sound speed, R m , relative association, R A , and molecular association, M A . These parameters, especially excess functions, are found to be quite sensitive toward the intermolecular interactions in liquid mixtures. The excess functions and deviations have also been correlated using Redlich-Kister type polynomial equation by the method of least-squares for the estimation of the binary coefficients and the standard errors.