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Studies on the Ionization of Substituted Benzoic Acids (1967)

Srivastava, K. C.

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 35 (1967), S. 118-121

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ISSN: 0021-8383

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Titrations of 3,4-, 3,5-dimethoxy and 4-Hydroxy-3,5-dimethoxy benzoic acids have been carried out by the pH metric method, at five different temperatures from 25° to 65°C using a Beckman pH meter. The pK values of the acids have been determined at five different temperatures. It has been observed that the substitution of a methoxy group in meta position lowers the pK value by 0.12 unit, in the para position raises the same by 0.26 unit and the substitution of a hydroxyl group in para position increases the pK value by 0.37 unit.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/prac.19670350303

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