物理化学学报 >> 1994, Vol. 10 >> Issue (03): 281-284.doi: 10.3866/PKU.WHXB19940316

研究简报 上一篇    下一篇

甘氨酸与氯化碱金属在水中的焓相互作用参数

卢雁, 甄少强, 卢锦梭   

  1. 河南师范大学化学系,新乡 453002
  • 收稿日期:1992-08-18 修回日期:1993-01-30 发布日期:1994-03-15
  • 通讯作者: 卢雁

The Enthalpic Interaction Parameters of Glycine with Some Alkali-Metal Chlorides

Lu Yan, Zhen Shao-Qiang, Lu Jin-Suo   

  1. Department of Chemistry, Henan Normal University, Xinxiang 453002
  • Received:1992-08-18 Revised:1993-01-30 Published:1994-03-15
  • Contact: Lu Yan

关键词: 焓相互作用参数, 溶解焓, 甘氨酸

Abstract:

The enthalpies of solution of glycine in water and in aqueouse solutions containing LiCl, NaCl and KCl have been measured at 298.15 K. The enthalpic interac tion paramters h_(xy), h_(xxy) and h_(xyy) of glycine with the three salts have been evaluated.There are electrostatic and structural interaction between the electrolytes and glycine. The structural interaction includes the partial desolvation of the solutes and the effect of ions on the hydration structure of glycine. The enthalpic interaction parameters obtained show the dependence on the size of cations. An analysis for the enthalpic interaction parameters indicates that the structural interaction will be responsible for the dependence of the enthalpic interaction parameters on the size of cations.

Key words: Enthalpic interaction parameter, Enthalpy of solution, Glycine