Ultrasonic studies on ternary liquid mixtures of some 1-alkanols with meta methoxy phenol and n hexane at 313 K

The thermo-physical parameters like density (rho), ultrasonic velocity (U) and viscosity (eta) have been experimentallymeasured for the Ternary LiquidMixtures of MetaMethoxy Phenol (MMP) in n Hexanewith 1 alkanols such as 1 propanol or 1 butanol or 1 pentanol at constant temperature 313 K and fixed frequency of 2 MHz. The thermodynamic and acoustical parameters such as adiabatic compressibility(ss), absorption coefficient (alpha/f(2)), internal pressure(pi(i)), cohesive energy(CE), free volume(V-f), free length(L-f), acoustic impedance(z), available volume (V-a), viscous relaxation time, Delta G value, Lenard Jones potential, Degree of intermolecular interaction(chi) and K value were calculated from the experimental data. The various excess properties including excess acoustic impedance(ZE), excess free length(Lf)E, excess adiabatic compressibility(beta(E)), excess free volume(V-f(E)), excess ultrasonic velocity (UE) and excess internal pressure(piE) were also computed from the calculated values. The values of UE, ZE, andLfE for eachmixture have been fitted to the Redlich -Kister polynomial equation. The variation of these parameterswith respect to different concentration at constant temperature for the three systems namely MMP+ 1 Propanol+n Hexane, MMP+ 1 Butanol+n Hexane and MMP+ 1 Pentanol+n Hexane have been discussed in the light ofmolecular interaction. Further, theoretical studies like Van Dael IdealMixing Relation, Impedance Dependant Relation, Junjie's and Nomoto's relation are validatedwith respect to experimental velocities at 313 K for all the different concentrations ranging from 0.001Mto 0.01Mof all the three systems and the Chisquare test for the goodness of fit is applied to check the validity of the theories. (C) 2020 Published by Elsevier B.V.