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迅速发展的离子选择性电极除为定量分析提供了一种快速、方便的工具外,亦可应用于电解质溶液的热力学研究。Butler等曾用液膜钾电极研究过KCI的活度。本文报道用两支离子选择性电极测定KCl的平均活度系数。实验 1.测量电池的构成由钾离子和氯离子选择电极构成如下无液接电池:相应的电池电动势为:(1)若,则(1)式可写成
The rapid development of ion selective electrode in addition to quantitative analysis provides a quick and easy tool, but also can be applied to the thermodynamics of electrolyte solution. Butler et al. Used liquid membrane potassium electrodes to study the activity of KCI. This article reports the average activity of KCl measured by two ion-selective electrodes. Experiment 1. Measurement of cell composition The potassium ion and chloride ion selective electrodes are composed of the following non-hydraulically terminated cells: The corresponding cell electromotive force is: (1) If, then (1) can be written as