ABSTRACT

Densities (ρ) and ultrasonic speeds ($u$) of the binary mixtures 2-chlorotoluene or 4-chlorotoluene or 1,3-dichlorobenzene (1) + 1,4-dioxane (2) were measured at temperature 298.15–318.15 K and atmospheric pressure. Using these measurements, excess volume ($V_m^E$) and deviation in ultrasonic speed ($u^E$) were calculated. Excess isentropic compressibility (${\kappa }_s^E$) was calculated using ρ and $u$ values. The ${V_m}^E$ values have been interpreted by Prigogine–Flory–Patterson (PFP) theory also. The ${V_m}^E$ obtained using PFP theory agree well with experimental values. The $u$ values were also calculated using various empirical relations. The available volume ($V_a$) and intermolecular free length (${L_f}^E$) were calculated using experimental u values by employing Jacobson free length theory.

摘要

密度 ( ρ ) 和超声波速度 ($你$) 的二元混合物 2-氯甲苯或 4-氯甲苯或 1,3-二氯苯 (1) + 1,4-二恶烷 (2) 在温度 298.15–318.15 K 和大气压下测量。使用这些测量，多余的体积（${五}_{米}^{乙}$) 和超声波速度偏差 (${你}^{乙}$) 进行计算。超等熵可压缩性 (${\kappa }_s^{乙}$) 使用ρ和$你$价值观。这${{五}_{米}}^{乙}$Prigogine-Flory-Patterson (PFP​​) 理论也解释了这些值。这${{五}_{米}}^{乙}$使用 PFP 理论得到的结果与实验值吻合得很好。这$你$还使用各种经验关系计算值。可用音量 (${五}_{\mathrm{一个}}$) 和分子间自由长度 (${{\mathrm{大号}}_F}^{乙}$) 是通过采用 Jacobson 自由长度理论使用实验u值计算的。