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采用电动势法测定了ＨＣｌ＋ＮａＣｌ＋ＤＭＳＯ＋Ｈ_２Ｏ体系在２９８．１５～３１８．１５Ｋ范围内，总离子强度分别恒定在Ｉ＝０．１，０．２，０．５ｍｏｌ·ｋｇ－１情况下的ＨＣｌ的活度系数。应用最小二乘法拟合，表明ＨＣｌ的活度系数遵守Ｈａｒｎｅｄ规则。从粒子间微观相互作用出发阐明了Ｈａｒｎｅｄ参数α_Ａ的物理意义，并给出了α_Ａ与温度和溶液离子强度之间的关系。
Abstract：Activity coefficients of HCl were measured at the temperature range from 298.15 to 318. 15K by the electro motive force method with the cell:Pt,H2(1 atm)|HCl+NaCl+DMSO+H_2O|AgCl-Ag.The experimental data were correlated using the least-square regression methed,andthe results show that LogγA of HCl obeys Harned rule very well.Furthermore,the physical meaning of Harned parameter αA was discussed in terms of the ion-solvent and ion-ion interactions,and the semi-quantitive relations of αA with temperature as well as the total ionic strength were derived according to the Pitzer's(1980) model.
1KhooKH．JChemSoc（A），1971：11772SpiveyHO，ShedlovskyT．JPhysChem，1971，71：21653HawesJL，KayRL，JPhysChem，1965，69（7）：24204PitzerKS．JAmerChemSoc，1980，102：29025陆小华，王延儒，时钧．化工学报，1989，3：293，3016HarnedHS，OwenBB，ThePhysChemofElecSol：3rded，Reinhold，NewYork，1957．6097OwenBB．JAmerChemSoc，1932，54：758
基本信息:
中图分类号:O642.5
引用信息:
[1]张锁江，汪文川，周西顺，卢锦梭.HCl－NaCl－DMS－OH_2O体系中HCl的活度系数[J],1996(02).
基金信息:
北京大学稀土材料化学与分子工程国家重点实验室资助,清华大学萃取分离国家重点实验室资助