Effect of temperature change on thermo-acoustic parameters of binary liquid mixture of benzyl propionate with ethanol.

Benzyl propionate and ethanol binary liquid solutions were tested at temperatures of 308 K, 313 K, 318 K, 323 K, 328 K, and 333 K to determine their density (ρ), speed of sound (u), and viscosity (η). Using experimental data, it has been possible to determine the acoustic impedance (Z), adiabatic compressibility (βa), intermolecular free length (Lf), relaxation time (휏), internal pressure (휋), and thermodynamic parameters including Gibb's free energy (Δ퐺) and enthalpy (H). Based on the data, the detailed discussions have been done on the interactions and structural elements in these binary mixes. The existence of solute-solvent interactions in the binary system is implied by the linear fluctuations obtained for the thermoacoustic parameters, which supports the aforementioned findings. [ABSTRACT FROM AUTHOR]