SOLUBILITY PRODUCTS OF POTASSIUM AND TRIISOAMYL-N-BUTYLAMMONIUM PICRATES AND TETRAPHENYLBORATES IN ETHANOL-WATER MIXTURES AT 25 DEGREES C

被引：22

作者：

DILL, AJ

POPOVYCH, O

机构：

[1] Department of Chemistry, Brooklyn College, University of New York, Brooklyn

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 1969年 / 14卷 / 02期

关键词：

D O I：

10.1021/je60041a024

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Solubility (ion-activity) products of potassium picrate (KPi), potassium tetraphenylborate (KBPh4), and triisoamyl-n-butylammonium picrate (TABPi) were determined at 25°C. over the entire range of ethanol-water solvents, and those of triisoamyl-n-butylammonium tetraphenylborate (TAB BPf4), in 40 to 100 weight % ethanol in water. Molar absorptivities of picrate and tetraphenylborate ions were obtained as a function of ethanol-water composition in the visible and ultraviolet regions of the spectrum, respectively. Saturated solutions of the title electrolytes were analyzed quantitatively by spectrophotometry. Mean ionic activity coefficients of the electrolytes in saturated solutions were evaluated from studies of their solubility as a function of ionic strength varied by means of added lithium chloride. At solubilities < 10-3 M, activity coefficients obeyed the limiting Debye-Hückel law. © 1969, American Chemical Society. All rights reserved.

引用

页码：240 / &

共 13 条

[1]

BRONSTED JN, 1924, J AM CHEM SOC, V46, P555

[2] SINGLE ION CONDUCTANCES IN NONAQUEOUS SOLVENTS [J].