摘要
本文利用改进的倾斜式连续稀释膨胀计,在常压和298.15K 下测定了苯与环己烷以及苯与正丁醇,异丁醇,仲丁醇二元混合液的摩尔过量体积.实验结果用R—K 方程拟合,苯与环己烷过量体积的平均标准偏差为0.0009cm^3·mol.^(-1),此结果与文献值符合较好.对于苯和三种丁醇同分异构体所组成的二元体系,其摩尔过量体积在全浓度范围内均为正值,V^E 随着醇中羟基位置和烷基结构的变化,其顺序为:正丁醇<异丁醇<仲丁醇.从分子间的相互作用,对实验结果进行了定性解释.
At 298.15K and atmosphere pressure,excess molar volumes of Benzene with cyclohexane,n-butanol,iso-butanol or sec-btutanol have been measured with an improved continuous-dilution dilatometer.Experimental results were fitted to R-K equation.Standard deviations and the least-squares parameters for benzene+cyclohexane are compared with available results in literatures.It is found that excess molar volumes are positive over the en-
tire range of x for benzene+n-butanol,iso-butanol,Sec-butanol,V^E values increase with the variety of hydroxyl position in the alkanol.The experimental results are qualitatively disscus-sed in brief from the interaction between molecules.
出处
《河南科学》
1991年第1期24-33,共10页
Henan Science
关键词
液体混合物
过量体积
测量
膨胀计
Excess Volume
Continuous dilution dilatometer
Benzene
Cyclohexane
Butanol
