Study of densities, viscosities, and speeds of sound of binary liquid mixtures of butan-1-ol with n-alkanes (C6, C8, and C10) at T=(298.15, 303.15, and 308.15)K

• Published in: The Journal of chemical thermodynamics 2008-02, Vol.40 (2), p.309-320
• Main Authors: Dubey, Gyan Prakash, Sharma, Monika, Dubey, Neelima
• Format: Article
• Language: English
• Subjects: Binary mixtures; Chemical thermodynamics; Chemistry; Densities; Exact sciences and technology; Excess molar volumes; General and physical chemistry; Interaction parameters; Isentropic compressibility; Mixtures; Speed of sound; Thermodynamic properties; Viscosities; Viscosity deviation
• ISSN: 0021-9614; 1096-3626
• DOI: 10.1016/j.jct.2007.05.016

The densities (ρ) and speeds of sound (u) have been measured over the whole composition range for (butan-1-ol with hexane, or octane, or decane) at T=(298.15, 303.15, and 308.15)K and atmospheric pressure along with the properties of the pure components. Viscosities (η) of these binary mixtures have also been measured over the entire composition range at T=298.15K. Experimental values of density, viscosity and speed of sound have been used to evaluate excess properties viz. excess molar volumes (VE), deviation in viscosity (Δη), deviation in speeds of sound (Δu), deviation in isentropic compressibility (Δκs) and excess Gibbs free energy of activation of viscous flow (ΔG∗E). The excess properties have been correlated using the Redlich–Kister polynomial equation. The sign and magnitude of these excess properties have been used to interpret the results in terms of intermolecular interactions and structural effects. The viscosity data have also been correlated by Grunberg and Nissan, Tamura–Kurata, and Hind correlation equations.