Acoustical Studies of Ternary Liquid Mixtures of 2-Aminothiazole in DMF-Water at Different Temperatures

Abstract

ABSTRACT. The nature and the relative strength of the intermolecular interaction between the components of the liquid mixtures have been successfully investigated by ultrasonic method. In present study, the densities (ρ), ultrasonic velocities (u), viscosity(ɳ) and refractive index(n D ) in a ternary liquid mixture of 2-aminothiazole with N,N-dimethylformamide (DMF) in water have been measured at 303.15, 308.15, 313.15,318.15 and 323.15 K respectively, over the entire composition range by using densitometer, ultrasonic interferometer, viscometer and refractmeter respectively. The measured data have been used to compute the various thermo-acoustic parameters using the standard relations namely, adiabatic compressibility (β s ), intermolecular free length (L f ), specific acoustic Impedance (Z),Wada constant (W), molar sound velocity(R), relative association (R A ), apparent molar compressibility(   ),apparent molar volume( V  )viscosity relaxation time(Г), absorption coefficient, internal pressure (ᴨ),free volume (V f ),Gibb ҆ s free energy(∆G) and specific refraction (r), etc. The results have been analyzed on the basis of variation in thermodynamic parameters. These parameters are useful for explaining the molecular association and interaction between the components of ternary liquid mixtures. The variation in densities and ultrasonic velocities with concentrations in the system show similar trends for evaluated parameters of the constituents in ternary mixture at different temperatures. The results have been interpreted in terms of solute-solvent and solvent-solvent interaction.

Ultrasonic Study of Substituted Thiazoles at Different Temperatures

“…The present work is the continuation of our earlier studies on thermodynamical and acoustical properties of binary and ternary mixtures [12][13][14] . The ultrasonic velocities, densities and relative association of substituted thiazoles used in this investigation in polar aprotic-polar protic mixed media at different temperature was lacking and therefore the present work is undertaken to study sound velocities and densities of these thiazoles of 0.01 mol/dm 3 …”

Stability Constant of Rare Earth Metals with Substituted Thiazoles at 298.15K

“…Heterocyclic compounds have been major interest of research due to oxygen, nitrogen and sulphar [1] . Thiazoles have become the focus of interest in the recent past on account of their medicinal, biological and agrochemical activities [2][3][4] .…”