## Abstract Addition of azide ions considerably slows down the oxidation of ascorbic acid by nitrous acid. At a pH of about 2 an approximately 10 fold excess of hydrazoic acid over ascorbic acid changes the rate law found in part III into This is identical with the rate law found in 0·1 to 0·5 M a
Über die Oxydation von Ascorbinsäure durch salpetrige Säure Teil III: Kinetik im Gebiet der Taylor'schen Gleichung. 15. Mitteilung über Reduktone und Tricarbonylverbindungen
✍ Scribed by H. Dahn; Lotte Loewe; C. A. Bunton
- Publisher
- John Wiley and Sons
- Year
- 1960
- Tongue
- German
- Weight
- 393 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
At pH ca. 2 the oxidation of reductones by nitrous acid follows the rate law
Both k and k were determined for ascorbic acids in water and in aqueous dioxan and for phenylhydroxytetronic acid in water. The reductonate anions are about 200 times more reactive than the acids in water and 1700 times more reactive in aqueous dioxan.
📜 SIMILAR VOLUMES
## Abstract At pH ca. 4 the rate of oxidation of ascorbic acid and of phenylhydroxytetronic acid by nitrous acid in the presence of excess nitrite ions is found to be independent of reductone concentration. The rate law is k~2~ was evaluated both in water and in aqueous dioxan. Under the same cond
## Abstract Oxidation of ascorbic acid by nitrous acid at pH 0 to 5 follows the stoechiometric equation: This was shown by potentiometric titration of the ascorbic acid and by gas analysis.