电导法对弱电解质乙酸(HAc)电离度及离解平衡常数等物理量的测定研究

Weak Electrolyte Conductance Method Acetic Acid Degree of Ionization and Dissociation Equilibrium Constant Physical Properties Determination Study

采用DDS-11A型电导率仪测定弱电解质乙酸(HAc)在不同浓度时的电导率值,采用计算法和作图法分别得电离度α、平衡常数K、无限稀释摩尔电导率Λ∞m等.结果显示:在25±0.1℃时测定的乙酸(HAc)的电离度α、平衡常数K、无限稀释摩尔电导率Λ∞m等的实验值,与其相应理论值接近.

Determination of weak electrolyte acetic acid using DDS-11 A type conductivity meter(HAc) of electrical conductivity in different concentration values, using simple method respectively, the degree of ionization equilibrium constant K, the limit molar conductivityΛ∞m. The results showed: acetic acid were determined at 25±0.1℃(HAc), the degree of ionization,equilibrium constant K, the limit molar conductivity Λ∞mexperimental values, and the corresponding theoretical values close to.