摘要
用微量流动混合量热法则定了２９８．１５Ｋ时乙酸、氯乙酸、溴乙酸、碘乙酸、丙酸和正丁酸等六种有机酸在水－乙醇混合溶剂中的标准电离焓，计算了相应体系的标准电离自由治和电离熵，并讨论了取代基效应、溶剂效应对有机酸电离程度的影响．
he enthalpies of ionization of acetic, chloroacetic, bromoacetic ,iodoacetic ,propionic and n-butyric acids in water-ethanol mixtures were measured at 298. 15K with the LKB-2277BioActivity Monitor. The Gibbs free energies and entropies of ionization of these acids in solutionwere calculated. The effects of solvation and of substituting group on ionization were discussed.
基金
国家自然科学基金
关键词
混合溶剂
有机酸
电离热力学
水
乙醇
电化学
micro-flow-calorimeter
mixed solvent
organic acid
ionization thermodynamics
