Open AccessUltrasonic Study of Effect of Temperature and Concentration on Molecular Interaction in Ternary Liquid Mixture (Propylene Glycol + Benzene + Ethanol)
Author(s) -
. Hema,
Tara Datt Bhatt,
T.C. Pant,
Charu Ch. Dhondiyal,
Himani Tiwari
Publication year - 2019
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2020.22341
Subject(s) - chemistry , ternary operation , benzene , thermodynamics , polyvinyl alcohol , ultrasonic sensor , viscosity , analytical chemistry (journal) , chromatography , organic chemistry , physics , computer science , acoustics , programming language
Ultrasonic velocity, density and viscosity in the ternary mixture of propylene glycol, benzene and ethanol have been measured at 303, 308, 313 and 318 K and 2 MHz. The values of excess thermo-acoustic parameters uE, ηE, Ks E , Lf E , Vm E, ZE; and the Lennard-Jones potential repulsive term exponent (n) have been calculated by using the values of measured parameters. The variation in values and signs of excess parameters with increase in concentration of propylene glycol and temperature is explained by the mechanism of changing the nature of molecular interactions between unlike molecules.Further, the experimental ultrasonic velocities are compared with theoretical values calculated by using various theories like Nomoto′s relation (NR), Schaaffs′s collision factor theory (CFT) and Jacobson′s free length theory (FLT). The relative applicability of these theories is discussed in terms of average percentage errors (APE). The average percentage errors follows the order CFT < NR < FLT at each temperature.