TITLE

A kinetic and mechanistic study of oxidation of tartaric acid by potassium bromate in perchloric acid medium catalysed by Ru (III)

AUTHOR(S)
Kushwaha, Usha; Singh, Amita; Kumar, Anil; Singh, A. K.; Khan, Firoz
PUB. DATE
June 2012
SOURCE
Journal of Chemical & Pharmaceutical Research;2012, Vol. 4 Issue 6, p3144
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Kinetics and mechanism of the Ru (III) catalysed oxidation of α - hydroxy acid (tartaric acid ) by KBrO3 in perchloric acid medium have been investigated. First order dependence in each [KBrO3] and Ru (III) chloride was observed. The order in Ru (III) was found to be unity and decreasing effect of hydrogen ion concentration on the rate was observed. Variation of the ionic strength and dielectric constant of the medium and addition of Hg (OAc)2 (used as Br- scavenger) had an insignificant effect on the rate of reaction. Activation parameters have also been calculated and reported. A suitable mechanism consistent with the observed kinetic results has been suggested and the related rate law deduced. Glyoxal was detected as end product.
ACCESSION #
87976851

 

Related Articles

  • Dynamics of Electron Transfer Reaction of Trioxosulfate(IV) Ion with Dinuclear Iron(III)-Salen Complex in Perchloric Acid Medium. ATIGA, SIMEON; UKOHA, PIUS O.; UJAM, OGUEJIOFO T. // Asian Journal of Chemistry;2015, Vol. 27 Issue 4, p1274 

    The kinetics of oxidation of trioxosulfate(iV) ion, SO32-, by [(Fe(salen))2adi], was investigated in aqueous perchloric acid medium. Stoichiometric results indicate that one mole [(Fe(salen)) 2adi] was reduced per two moles SO32- oxidized. Under pseudo-first order conditions of SO32- being above...

  • Features of autoxidation of ferrocenylcarboxylic acid and its methyl ester in organic solvents in the presence of Brønsted acids. Fomin, V.; Shirokov, A. // Russian Journal of General Chemistry;Feb2013, Vol. 83 Issue 2, p289 

    We have studied the autoxidation of ferrocenecarboxylic acid and its methyl ester in organic solvents in the presence of perchloric and trifluoroacetic acids. Based on the results of kinetic studies and data on the composition of the reaction products, we suggested the possible reaction...

  • Determination of Potassium Bromate content in Selected Bread Samples in Gwagwalada, Abuja-Nigeria. Adewale ALLI, Lukman; Madueke NWEGBU, Maxwell; INYANG, Bassey I.; Chiwuba NWACHUKWU, Kenneth; Onimisi OGEDENGBE, John; ONAADEPO, Olufunke; Abubakar JAMDA, Mustapha; Akintunde AKINTAN, Ganiyu; IBRAHIM, Sani Okoye; Adebowale ONIFADE, Ernest // International Journal of Health & Nutrition;2013, Vol. 4 Issue 1, p15 

    Background: Potassium bromate (KBrO3) is a nephrotoxic and carcinogenic substance used in food and cosmetics industry, and also found in drinking water as a by-product of disinfection. Despite the ban placed on the use of potassium bromate as bread-enhancer in Nigeria, it is commonly used by...

  • Bottle Wine in Green. Luntz, Stephen // Australasian Science;Mar2013, Vol. 34 Issue 2, p12 

    The article discusses a research study by Andrew Clark of the National Wine and Grape Industry Centre which examined the tartaric acid found in white wine.

  • Kinetics of Oxidation of Substituted Phenols by Potassium Bromate. Mathew, Asha; Kishore Panda, Jaya // International Research Journal of Pure & Applied Chemistry;2012, Vol. 2 Issue 3, p196 

    Kinetic methods of analysis are now accepted as standard analytical procedures for several of reactions, especially oxidation types. Though the reaction of phenols and substituted phenols by potassium bromate is well understood as an oxidative type, there was a need to understand and more...

  • KINETIC CATALYTIC TEST-METHOD OF OSMIUM TRACE DETERMINATION. KHOMUTOVA, E. G.; OSTANINA, O. I. // Izvestiya Vysshikh Uchebnykh Zavedenii. Seriya Khimiya i Khimich;2014, Vol. 57 Issue 3, p59 

    The kinetic catalytic test-method of osmium trace determination was proposed. It is based on carrying out the indicator reaction of oxidation of arsenic (III) and neutral red by potassium bromate on a solid carrier. The determination optimum conditions were choosen. The determination is possible...

  • Mechanism of the oxidative cleavage of diethylene glycol by bromate in acid medium. Pal, Biswajit // Journal of Chemical & Pharmaceutical Research;2014, Vol. 6 Issue 7, p47 

    The oxidative cleavage of diethylene glycol by bromate ion has been studied in hydrochloric acid medium in the temperature range 298-313 K. The rate of the reaction is dependent on the first power of the concentration of diethylene glycol and bromate ion. The reaction rate increases with...

  • Effect of L-tartaric acid on various properties of L-proline cadmium chloride crystals. Malathi, M.; Rayar, S. L.; Selvarajan, P. // Journal of Chemical & Pharmaceutical Research;2014, Vol. 6 Issue 11, p873 

    L-proline cadmium chloride (LPCC) crystals doped with L-tartaric acid were grown by solution method. Solubility was measured for the samples at different temperatures from 30 °C to 50 °C. Single crystal XRD studies have been carried out to identify the crystal structure. Microhardness was...

  • Beckmann Rearrangement of Oximes Using Doped Silica Gel Complex. UMANADH, Y.; REDDY, N. SRINIVASA; MUKKANTI, KHAGGA; OMPRAKASH, G. // Asian Journal of Chemistry;2015, Vol. 27 Issue 4, p1209 

    A new complex of perchloric acid absorbed on silica gel (doped silica gel) and dichloromethanewas found to be very effective for converting ketoximes into their corresponding amides or lactams with excellent conversion via the Beckmann rearrangement. This method offers significant advantages...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics