甘油-水混合溶剂中盐酸热力学性质  

Thermodynamic Properties of HCI in the Mixed Solventsof C_3H_8O_3 - H_2O

作　　者：王琴萍[1] 张 莉[1] 孙雪丽[1] 洪 梅[1] 吕殿祯[1] 

机构地区：[1]辽宁大学化学系,辽宁沈阳110036

出　　处：《辽宁大学学报（自然科学版）》2002年第2期97-102,共6页Journal of Liaoning University：Natural Sciences Edition

摘　　要：在恒定溶液总离子强度I=1.000mol·kg-1,改变甘油在混合溶剂中的质量分数χ=5、15和20的条件下,应用经典的电动势方法测定无液体接界电池的电动势:Pt,H2（101.325kPa）|HCl（m）,C3H8O3（x）,H2O（1-x）|AgCl-Ag（A）根据测得电池（A）的电动势,确定混合溶剂中AgCl-Ag电极的标准电极电势,计算了HCl在甘油-水混合溶剂中的活度系数,进一步讨论了HCl的迁移自由能、迁移熵和迁移焓.The thermodynamic properties of the system HCl-C3H8O3-H2O was studied by emf measurement in the cell(A) without liquid interfacePt,H2(101.325kPa) |HCl(m),C2H6O2(x),H2O(1-x)|AgCl-AgAt the mass percentage of glycerol, x =5,15 and 20 in the mixed solvent, at the temperature from 5 to 45℃, the constant total ionic strength I=1.000 mol·kg-1. The standard electrode potential of Ag-AgCl in the mixed solvent was determined from the cell (A) . The activity coefficients of HCl γA in the mixed solvent was determined. And further, the standard transfer Gibbs free energies of HCl was calculated.

关 键 词：甘油-水混合溶剂 盐酸 热力学性质 活度系数 电动势 电极电势 无液体接界电池 迁移自由能 

分 类 号：O645.164[理学—物理化学] O646.23[理学—化学]