2-氯丁烷、1,2-二氯丁烷气态生成焓的测量  

Measurements of Enthalpies of Formation of 2-Chlorobutane and 1, 2-Dichlorobutane in Gaseous State

作　　者：何俊[1] 安绪武[1] 胡日恒[1] 

机构地区：[1]中国科学院化学研究所,北京100080

出　　处：《化学学报》1992年第10期961-966,共6页Acta Chimica Sinica

基　　金：国家自然科学基金

摘　　要：用转动氧弹燃烧热量计测量了298.15K时2-氯丁烷和1,2-二氯丁烷的标准液态燃烧反应内能变化值,得到了它们的标准气态生成焓值,并进一步考查了二氯取代对氯代烷烃气态生成焓值的影响量.Heats of combustion of 2-chlorobutane and 1, 2-dichlorobutane were measured at 25°C by a rotation bomb combustion calorimeter with a tatanum lined bomb, the results being respectively -2680.51±0.95, -2529.54±1.63kJ/mol. Enthalpies of formation in liquid and gaseous state were derived: 2-chlorobutane, -198.43±0.99, -166.66±0.99kJ/mol; 1, 2-dichlorobutane, -231, 35±1.66, -191.21±1.66kJ/mol. The used enthalpes of vaporization were determined by a LKB vaporization calorimeter, they are respectively 31.77±0.08, 40.14±0.07kJ/mol. The influences of the inter-molecular interactions between the two chlorine atoms in a molecule on the enthalpies of formation were calculated and discussed again for 1 2-dichloroalkanes.

关 键 词：2-氯丁烷 1 2-二氯丁烷 燃烧焓 生成焓 

分 类 号：O623.21[理学—有机化学]