Thermodynamic and acoustical properties of mixtures p-anisaldehyde—alkanols (C1–C4)—2-methyl-1-propanol at 303.15 K

Resumo

The density, viscosity and speed of sound of pure p-anisaldehyde and some alkanols, for example, methanol, ethanol, propan-1-ol, propan-2-ol, butan-1-ol, butan-2-ol, 2-methylpropan-1-ol, and the binary mixtures of p-anisaldehyde with these alkanols were measured over the entire composition range at 303.15 K. From the experimental data, various thermodynamic parameters such as excess molar volume (V^E), excess Gibbs free energy of activation (ΔG*^E), and deviation parameters like viscosity (Δη), speed of sound (Δu), isentropic compressibility (Δκ_s), are calculated. The excess as well as deviation parameters are fitted to Redlich—Kister equation. Additionally, the viscosity data for the systems has been used to correlate the application of empirical relation given by Grunberg and Nissan, Katti and Chaudhari, and Hind et al. The results are discussed in terms of specific interactions present in the mixtures.