摘要
测定了水-乙醇-NaBr在常压(100.8±0.2kPa)下的汽液平衡数据 通过对汽液平衡数据的关联给出双液比固定条件下盐在混合溶剂中活度系数的计算方法 计算结果表明在具有固定双液比的乙醇-水混合溶剂中NaBr的平均活度系数随其浓度的增加呈现先减小。
The isobaric vapor-liquid equilibrium of water-ethanol-NaBr system was determined at normal atmosphere (100.8±0.2kPa). A calculation method for activity coefficients of salt in liquid mixtures with fixed composition was proposed by means of correlating vapor-liquid equilibrium data. The results of calculation show that the mean activity coefficients of NaBr in liquid mixture with constant composition decrease at first as its concentration increases, then they pass a minimum and increase gradually again.
出处
《河南大学学报（自然科学版）》
CAS
2003年第4期54-56,61,共4页
Journal of Henan University:Natural Science
基金
河南省教委基础研究项目(编号:2000150028)
关键词
汽液平衡
溴化钠
乙醇
水
活度系数
vapor-liquid eguilibrium
sodium bromide
ethanol
water
activity coefficient
