SOLUBILITY PRODUCTS AND TRANSFER ACTIVITY-COEFFICIENTS OF POTASSIUM PICRATE, POTASSIUM TETRAPHENYLBORATE, AND TETRAPHENYLPHOSPHONIUM PICRATE IN METHANOL-WATER MIXTURES AT 25-DEGREES-C

被引：19

作者：

LABROCCA, PJ ^{[1
]}

PHILLIPS, R ^{[1
]}

GOLDBERG, SS ^{[1
]}

POPOVYCH, O ^{[1
]}

机构：

[1] CUNY BROOKLYN COLL, DEPT CHEM, BROOKLYN, NY 11210 USA

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 1979年 / 24卷 / 03期

关键词：

D O I：

10.1021/je60082a025

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Solubility (ion-activity) products of potassium picrate, potassium tetraphenylborate, and tetraphenylphosphonium picrate were determined at 25 °C over the entire range of methanol-water mixtures at intervals of about 10 wt% methanol. Molar absorptivities of picrate and tetraphenylborate ions in the near-ultraviolet region of the spectrum were obtained for the entire range of methanol-water solvents. Solubilities of the title electrolytes were determined by spectrophotometric analysis of their saturated solutions. Mean ionic activity coefficients of the electrolytes in saturated solutions were evaluated from the variation of solubility as a function of ionic strength varied by means of added lithium chloride. Transfer activity coefficients for the electrolytes were calculated from their solubility products in water and the nonaqueous solvents. © 1979, American Chemical Society. All rights reserved.

引用

页码：215 / 218

页数：4

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