DETERMINATION OF AUTOPROTOLYSIS CONSTANTS OF KETONES USING HYDROGEN-PALLADIUM GENERATOR ELECTRODE

被引:4
|
作者
MIHAJLOVIC, RP [1 ]
DZUDOVIC, RM [1 ]
VAJGAND, VJ [1 ]
机构
[1] UNIV BELGRADE, FAC SCI, BELGRADE, YUGOSLAVIA
关键词
D O I
10.1016/0039-9140(93)80272-S
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A coulometric-potentiometric method for the determination of autoprotolysis constants of acetone and methyl ethyl ketone, is described. The method is based on the titration of a strong base, i.e., tetrabutylammonium hydroxide with protons obtained by anodic oxidation of hydrogen at an H-2/Pd electrode in the presence of tetrabutylammonium perchlorate as the supporting electrolyte. The titration was carried out in a galvanic cell with glass and calomel electrodes, at 25-degrees. The pK(s) value obtained for acetone and methyl ethyl ketone were 25.82 +/- 0.05 and 26.92 +/- 0.07, respectively.
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收藏
页码:649 / 652
页数:4
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