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Issue
Korean Journal of Chemical Engineering,
Vol.35, No.8, 1687-1699, 2018
Ultrasonic velocity measurements in isobutyric acid - water binary mixtures over the temperature range from 300.15 to 313.15 K
Trabelsi R, Bouanz M, Toumi A
We measured the ultrasonic velocity, U, density, ρ, and viscosity, η in Isobutyric acid - water binary liquid mixtures over the entire composition range at temperatures ranging from 300.15 to 313.15 K under atmospheric pressure. The experimental data values were analyzed to determine, various acoustical parameters: adiabatic compressibility, β, acoustic impedance, Z, free length, Lf, free volume, Vf, molar volume, Vm, relaxation time, τ, absorption coefficient, α/f2, internal pressure, π i, Gibb…s free energy, ΔG, cohesive energy, CE, Wada…s constant, W, Rao…s constant, Rm and relative association, RA. The variation of these parameters versus the mixture composition was explained on the basis of the intermolecular interactions between the components of the mixture.
Keywords: Binary Mixtures; Isobutyric Acid; Water; Molecular Interactions; Ultrasonic Velocity; Acoustical Parameters
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