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Über die Oxydation von Ascorbinsäure durch salpetrige Säure Teil IV: Die Reaktion nullter Ordnung. 16. Mitteilung über Reduktone und Tricarbonylverbindungen
Author(s) -
Dahn H.,
Loewe Lotte
Publication year - 1960
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.19600430141
Subject(s) - chemistry , nitrous acid , ascorbic acid , nitrite , aqueous solution , medicinal chemistry , organic chemistry , nitrate , food science
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\documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm v = k}_{\rm 2}\, {\rm }[{\rm HNO}_{\rm 2}]^2 . $$\end{document} k 2 was evaluated both in water and in aqueous dioxan. Under the same conditions the two reductones gave the same value of K 2 .