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化学学报
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化学学报 ›› 1993, Vol. 51 ›› Issue (4): 325-327. 上一篇    下一篇

研究论文

卤代乙酸在水-DMF混合溶剂中的电离热力学研究

雷群芳;俞庆森;宗汉兴;林瑞森   

  1. 浙江大学化学系
  • 发布日期:1993-04-15

Ionization thermodynamics of acids in water-DMF mixtures at 298.15K

LEI QUNFANG;YU QINGSEN;ZONG HANXING;LIN RUISEN   

  • Published:1993-04-15

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545

用LKB2277 BioActivity Monitor测定了298.15K时, 乙酸、氯乙酸、溴乙酸和碘乙酸在水-DMF(N, N-二甲基甲酰胺)混合溶剂中的标准电离焓, 计算了相应体系的标准电离熵。用溶质和溶剂相互作用的观点讨论了实验结果。

关键词: 碘化合物, 水, 热力学性质, 溴化合物, 电离, 乙酸, 氯乙酸, 二甲基甲酰胺

The enthalpies of ionization of acetic, chloroacetic, bromoacetic, and iodoacetic acids in water-DMF mixtures were measured at 298.15K. The entropies of ionization of the same acids in the same solns. were then calculated According to the different effects displayed on the solute-solvent interactions, the results obtained for the acids were explained.

Key words: IODINE COMPOUNDS, WATER, THERMODYNAMIC PROPERTIES, BROMINE COMPOUNDS, IONIZATION, ACETIC ACID, CHLOROACETIC ACID, DIMETHYLFORMAMIDE

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