PC-SAFT Model on Molecular Interactions in Acetophenone with Chloroalkanes and Chloroalkenes Solutions at Different Temperatures: Volumetric, Acoustic, and Electromagnetic Approach

Abstract

The study aimed to investigate the properties of thermodynamics, acoustics, and electromagnetism in order to understand the interactions between molecules both within and between different compounds. The study also examined how molecular shape and structure, as well as temperature and the presence of chlorine atoms in alkanes and alkenes, influenced these properties. Measurements were taken for densities (ρ), speeds of sound (u), and refractive indices (\({n}_{\text{D}}\)) in various mixtures containing acetophenone with 1,2-dichloroethane, 1,1,1-trichloroethane, 1,1,2,2-tetrachloroethane, trichloroethene or tetrachloroethene at temperatures ranging from 298.15 K to 318.15 K. Additionally, excess molar volumes (\({V}_{\text{m}}^{\text{E}}\)), isentropic compressibilities\(({K}_{s}\)), excess isentropic compressibilities (\({\kappa }_{\text{S}}^{\text{E}}\)), and excess refractive index \({(n}_{\text{D}}^{\text{E}}),\) were calculated. The quantities were correlated with the Werblan relation. The \({V}_{\text{m}}^{\text{E}}\) values exhibited negative for all mixtures except for acetophenone + 1,2-dichloroethane which had positive values while the tetrachloroethene system showed both positive and negative values. The \(({\kappa }_{\text{S}}^{\text{E}}),\) values were showed negative for all binary mixtures. Lastly, \(\text{the} {(n}_{\text{D}}^{\text{E}})\) values for acetophenone with 1,2-dichloroethane were negative and with tetrachloroethene an inversion in sign at low volume fraction of acetophenone was observed. For the three remaining binary mixtures the \({(n}_{\text{D}}^{\text{E}})\) values were exhibited positive. The PC-SAFT model accurately predicted mixture densities and matched well with experimental data.