Theoretical Evaluation of Ultrasonic Velocities in Binary Liquid Mixtures of Anisaldehyde with Some Alcoxyethanols at Different Temperatures

Abstract

Ultrasonic velocities and densities of the binary liquid mixtures of anisaldehyde with alcoxyethanols like methoxyethanol (MOE), ethoxyethanol (EOE), and butoxyethanol (BOE) have been measured at temperatures 303.15 K, 308.15 K, 313.15 K, and 318.15 K over the entire composition range of mole fractions. The theoretical values of ultrasonic velocity were evaluated using Nomoto's relation (U NR ), impedance relation (U IR ), ideal mixing relation (U IMR ), Jungie's relation (U JR ), and Rao's specific velocity relation (U R ). The molecular interaction parameter (χ) has been evaluated from the values of experimental and theoretical velocities. The variation of this interaction parameter with the composition mixture has been discussed in terms of molecular interactions.

Theoretical Evaluation of Ultrasonic Velocities in Ternary Liquid Mixture at Different Temperatures

“…Similar kinds of results were obtained by earlier workers [13][14] . The deviations between theoretical and experimental values of ultrasonic velocities decrease with increase of temperature due to breaking of hetero and homo molecular clusters at higher temperatures 15 . On increasing the temperature, the ultrasonic velocity values decrease in the ternary liquid mixture.…”

Theoretical Evaluation of Ultrasonic Velocities in Ternary Liquid Mixture of Tetrahydrofuran, Heptane and Decane at Different Temperatures

“…The deviations between theoretical and experimental values of ultrasonic velocities decrease with increase of temperature due to breaking of hetero and homo molecular clusters at higher temperatures 16 . On increasing the temperature, the ultrasonic velocity values decrease in the ternary liquid mixture.…”

Theories of Ultrasonic Velocities and their Application in Binary Liquid Mixtures of N-Ethylaniline with Some Toluenes (Toluene, o-Nitrotoluene and m-Nitrotoluene)

“…The aromatic ring decreases the alkalinity of the amine, depending on its substituents, while the presence of an amine group strongly increases the reactivity of the aromatic ring, due to an electron-donating effect. When a methyl group is introduced into the aromatic ring, it causes to change in the π-electron density around the aromatic ring 26 because of positive mesomeric and positive electromeric effects. (+T effect > -I effect).…”