机构地区: 中山大学化学与化学工程学院
出 处: 《中山大学学报(自然科学版)》 2004年第2期55-58,共4页
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.