Kinetics of Chromic Acid Oxidation of Citric Acid and Tartaric Acid (in Lemon and Tamarind, a Comparative Study) in Acetic Acid-Water Medium
Corresponding Author(s) : N.T Patel
Asian Journal of Chemistry,
Vol. 16 No. 2 (2004): Vol 16 Issue 2
Abstract
The oxidation of citric acid in lemon and tartaric acid in tamarind (natural form) by chromium(VI) shows that the rates of reaction are first order dependence, each in [Cr(VI)], [substrate]. The reactions are carried out in aqueous acetic acid medium and sulphuric acid in the temperature range 20 to 50°C. The reactions are acid catalyzed and presence/absence of water molecule participation in mechanism has been indicated by Hammetts and Bunnetts criteria. The decrease in dielectric constant of the medium increases the rate. Specific salt effect has been observed.
Keywords
Kinetics
Chromic acid
Oxidation
Citric acid
Tartaric acid
Mali, M., Khodaskar, S., & Patel, N. (2016). Kinetics of Chromic Acid Oxidation of Citric Acid and Tartaric Acid (in Lemon and Tamarind, a Comparative Study) in Acetic Acid-Water Medium. Asian Journal of Chemistry, 16(2), 811–817. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/14553
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