Determination of relative acidity scales for some dipolar aprotic solvents by coulometry using a hydrogen-palladium electrode

被引：1
|
作者：
Dzudovic, Radmila M. [1 ]
Jaksic, Ljiljana N. [2 ]
机构：
[1] Univ Kragujevac, Fac Sci, Kragujevac 34000, Serbia
[2] Univ Belgrade, Fac Min & Geol, Belgrade 11000, Serbia
来源：
JOURNAL OF THE SERBIAN CHEMICAL SOCIETY | 2008年 / 73卷 / 8-9期
关键词：
relative acidity scale; coulometric generation of perchloric acid; hydrogen-palladium electrode; non-aqueous solvents;
D O I：
10.2298/JSC0809871D
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A coulometric-potentiometric procedure for the determination of relative acidity scales of acetone, methylethyl ketone, methyl-isobutyl ketone and propylene carbonate is described. The range of the relative acidity scale of a solvent was determined from the difference between the half-neutralization potential of perchloric acid and that of tetrabutylammonium hydroxide. The perchloric acid was generated in situ from a hydrogen-palladium electrode in presence of sodium perchlorate or tetrabutyammonium perchlorate as the supporting electrolyte. The electrode pairs glass-SCE and (H-2/Pd)(ind)-SCE were applied for the measurement of the half-neutralization potentials of the acid and base. A wider range of relative acidity scale of the solvents was obtained with the glass-SCE electrode pair and tetrabutylammonium perchlorate as the supporting electrolyte.
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页码：871 / 878
页数：8
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