作　　者： ; ; (周西顺）; (卢锦梭）;

机构地区： 北京化工大学化学工程系

出　　处： 《高校化学工程学报》 1996年第2期120-125,共6页

摘　　要： 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。 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,H_2(1 atm)|HCl+NaCl+DMSO+H_2O|AgCl-Ag.The experimental data were correlated using the least-square regression methed,andthe results show that Logγ_A of HCl obeys Harned rule very well.Furthermore,the physical meaning of Harned parameter α_A was discussed in terms of the ion-solvent and ion-ion interactions,and the semi-quantitive relations of α_A with temperature as well as the total ionic strength were derived according to the Pitzer's(1980) model.

关 键 词： 混合电解质 盐酸 活度系数 电支势 参数

领　　域： [理学] [理学] [理学] [理学]