Spectroscopic and volumetric study of binary liquid mixtures containing Ethyl -4-hydroxy benzoate and alkanols

Abstract

Abstract The Speed of sound and density values for mixtures of Ethyl – 4 - hydroxy benzoate (E- 4- HB) with alkanols were measured at 303.15 K, 308.15 K and 313.15 K. From these experimental values, thermoacoustic properties like isentropic compressibility (Ks), molar volume (Vm), free length (LfE) and their excess parameters have been calculated. These excess parameters have been fitted to the Redlich–Kister type polynomial equation using the least square method. The values of partial molar volumes (V m, 1, V m,2)and infinite dilution (V∞m,1, V∞m,2) were estimated from molar volume (Vm). Further, the infrared spectra for all systems have been recorded to analyze and examine various stretching's present in the mixture. The digressions of the mixture were explained based on intra/ inter molecular relations among dissimilar molecules present in the system.