摘要
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 hxy, hxxy and hxyy 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 pa rameters indicates that the structural interaction will be responsible for the dependence of the enthalpic interaction parameters on the size of cations.
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 hxy, hxxy and hxyy 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 pa rameters indicates that the structural interaction will be responsible for the dependence of the enthalpic interaction parameters on the size of cations.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1994年第3期281-284,共4页
Acta Physico-Chimica Sinica
基金
国家自然科学基金
河南省自然科学基金
关键词
焓
溶解焓
甘氨酸
氯化碱金属
水
Enthalpic interaction parameter, Enthalpy of solution, Glycine
