氯仿、硝基苯与三甲苯异构体的过量摩尔体积  

Excess Molar Volumes of Binary Liquid Mixtures of Trichloromethane or Nitrobenzene with 1,3,5-Trimethylbenzene and 1,2,4-Trimethylbenzene at 298.15 K

作　　者：陆贵增[1] 欧阳钢锋[1] 邓桂茹[2] 杨洋溢[1] 黄钟奇[1] 

机构地区：[1]中山大学化学与化学工程学院,广东广州510275 [2]天津武警医学院化学教研室,天津300162

出　　处：《中山大学学报（自然科学版）》2004年第2期55-58,共4页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家973计划资助项目(G2000026302)

摘　　要：在298 15K下,用振动管密度计在全浓度范围内测量了氯仿、硝基苯分别与均三甲苯、偏三甲苯构成的二元液体混合物的过量摩尔体积VE。其中氯仿与均、偏三甲苯的VE为正值,且均三甲苯>偏三甲苯;硝基苯与均、偏三甲苯的VE为负值,且偏三甲苯>均三甲苯。The excess molar volumes V^E of {trichloromethane +1,3,5_trimethylbenzene,trichloromethane + 1,2,4_trimethylbenzene,nitrobenzene + 1,3,5_trimethylbenzene,nitrobenzene + 1,2,4_trimethylbenzene} were determined in the whole range of composition using a vibrating_tube densimeter at 298\^15 K.Excess molar volumes V^E are positive for mixtures of trichloromethane with trimethylbenzene. The V^E values at equimolar concentrations of trichloromethane follow the order 1,3,5_trimethylbenzene > 1,2,4_trimethylbenzene.The V^E values of {nitrobenzene + trimethylbenzene} are negative.The V^E values at equimolar concentrations of nitrobenzene follow the order 1,2,4_trimethylbenzene > 1,3,5_trimethylbenzene.

关 键 词：过量摩尔体积 振动管密度计 三甲苯 氯仿 硝基苯 

分 类 号：O642.42[理学—物理化学]