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应用钾离子选择性电极和Ag-AgCl电极组成可逆电池,通过测定电池的电动势,应用Debye-Hückel极限公式,求得不同温度下KCl在1,2-丙二醇非水溶剂中的活度系数(±),计算了KCl在1,2-丙二醇非水溶剂中的相对偏摩尔自由能(-GB,R),并据电解质溶液的溶剂化理论对KCl的活度系数及相对偏摩尔自由能的变化规律进行了初步的讨论.
A reversible cell was fabricated by using potassium ion selective electrode and Ag-AgCl electrode. Debye-Hückel limit formula was used to determine the electromotive force of the cell. The activity coefficient of KCl in 1,2-propanediol nonaqueous solvent at different temperatures (± ), The relative partial molar free energy (-GB, R) of KCl in 1,2-propanediol non-aqueous solvent was calculated and the change of activity coefficient and relative partial molar free energy of KCl according to the theory of solvation of electrolyte solution The law conducted a preliminary discussion.