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Potentiometrische Mikrobestimmung von scheinbaren Dissoziationskonstanten in Essigsäure
Author(s) -
Wegmann Dorothée,
Simon W.
Publication year - 1962
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19620450324
Subject(s) - chemistry , potentiometric titration , titration , acetic acid , chromatography , relative standard deviation , medicinal chemistry , organic chemistry , electrode , detection limit
Apparent pK values (pK AcOH * ) in 99.94% acetic acid/0.06% water (w/w) are determined by potentiometric titration with the aid of a semi‐automatic apparatus equipped with a glass electrode. The accuracy of a single determination is ±0.04 pK* AcOH units (standard deviation, 58 degrees of freedom). The pK AcOH *values of several bases are shown to be in linear relationship with the respective pK values in water and with the σ values of the Hammett equation.