Investigation of molecular interactions in binary liquid mixture: Measurements and correlation through thermo physicochemical study

Density (ρ)/acoustic speed (u) of sound have been experimentally measured over the complete mole fraction on (dimethyl carbonate + diisopropyl ether) mixture at T = (308.15/313.15/318.15) K and atmospheric pressure. Investigational data have been used to gauge excess molar volume /partial molar volume/excess partial molar volume/excess values of intermolecular free length/isentropic compressibility/acoustic impedance/isobaric thermal expansion coefficient/isothermal compressibility/surface tension. Extended Langmuir model pertinent to surface tension was applied to check the depth of penetration of molecular interactions between molecules. The excess values were fitted to Redlich-Kister equation and subsequently standard deviations are evaluated from coefficients. The departures of computed excess properties were explored in terms of molecular interactions. Experimental excess molar volume in the existing adventure was correlated by Prigogine-Flory-Patterson (PFP) theory/Soave-Redlich-Kwong (SRK) CEoS/Peng-Robinson (PR) CEoS at 308.15 K. Theoretical excess chemical potentials are computed and correlated by Margules/Porter/Wilson and VanLaar models at 308.15 K. Furthermore, vital thermodynamical potential derivatives are worked out at all temperatures through physicochemical properties rather calorimetric experiments. Contemporary study also consists of estimation and correlation of cohesive energy ΔA, Van der Wall's constants (a, b), distance of closest approach (d) by Hartmann-Balizar and Ballou non-linear equations at all temperatures.