KINETICS AND MECHANISM OF OXIDATION OF PENTAERYTHRITOL BY DITELLURATOARGENTATE(III) IN ALKALINE MEDIUM

The kinetics of oxidation of pentaerythritol by ditelluratoargentate (III) (DTA) in alkaline liquids has been studied spectrophotometrically in the temperature range of 293.2 K-313.2 K. The reaction rate showed first-order dependence in DTA and fractional order with respect to pentaerythritol. It wa...

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Autores principales:	JIN-HUAN,SHAN, CAI-HONG,YIN, GANG,BIAN, YAN-PING,LIU
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2013
Materias:	Ditelluratoargentate(III)(DTA) pentaerythritol redox reaction reaction kinetics mechanism fractional order k obs, OH- H4TeO6(2-) rate equations
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000200011
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spelling	oai:scielo:S0717-970720130002000112014-09-09KINETICS AND MECHANISM OF OXIDATION OF PENTAERYTHRITOL BY DITELLURATOARGENTATE(III) IN ALKALINE MEDIUMJIN-HUAN,SHANCAI-HONG,YINGANG,BIANYAN-PING,LIU Ditelluratoargentate(III)(DTA) pentaerythritol redox reaction reaction kinetics mechanism fractional order k obs, OH- H4TeO6(2-) rate equations The kinetics of oxidation of pentaerythritol by ditelluratoargentate (III) (DTA) in alkaline liquids has been studied spectrophotometrically in the temperature range of 293.2 K-313.2 K. The reaction rate showed first-order dependence in DTA and fractional order with respect to pentaerythritol. It was found that the pseudo-first-order rate constant k obs increased with an increase in concentration of OH- and a decrease in concentration of H4TeO6²־. There was a negative salt effect and no free radicals were detected. A plausible mechanism involving a two-electron transfer is proposed and the rate equations derived from the mechanism can explain all the experimental results. The rate equations derived from mechanism can explain all experimental observations. The activation parameters along with the rate constants of the rate-determining step were calculated.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.58 n.2 20132013-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000200011en10.4067/S0717-97072013000200011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Ditelluratoargentate(III)(DTA) pentaerythritol redox reaction reaction kinetics mechanism fractional order k obs, OH- H4TeO6(2-) rate equations
spellingShingle	Ditelluratoargentate(III)(DTA) pentaerythritol redox reaction reaction kinetics mechanism fractional order k obs, OH- H4TeO6(2-) rate equations JIN-HUAN,SHAN CAI-HONG,YIN GANG,BIAN YAN-PING,LIU KINETICS AND MECHANISM OF OXIDATION OF PENTAERYTHRITOL BY DITELLURATOARGENTATE(III) IN ALKALINE MEDIUM
description	The kinetics of oxidation of pentaerythritol by ditelluratoargentate (III) (DTA) in alkaline liquids has been studied spectrophotometrically in the temperature range of 293.2 K-313.2 K. The reaction rate showed first-order dependence in DTA and fractional order with respect to pentaerythritol. It was found that the pseudo-first-order rate constant k obs increased with an increase in concentration of OH- and a decrease in concentration of H4TeO6²־. There was a negative salt effect and no free radicals were detected. A plausible mechanism involving a two-electron transfer is proposed and the rate equations derived from the mechanism can explain all the experimental results. The rate equations derived from mechanism can explain all experimental observations. The activation parameters along with the rate constants of the rate-determining step were calculated.
author	JIN-HUAN,SHAN CAI-HONG,YIN GANG,BIAN YAN-PING,LIU
author_facet	JIN-HUAN,SHAN CAI-HONG,YIN GANG,BIAN YAN-PING,LIU
author_sort	JIN-HUAN,SHAN
title	KINETICS AND MECHANISM OF OXIDATION OF PENTAERYTHRITOL BY DITELLURATOARGENTATE(III) IN ALKALINE MEDIUM
title_short	KINETICS AND MECHANISM OF OXIDATION OF PENTAERYTHRITOL BY DITELLURATOARGENTATE(III) IN ALKALINE MEDIUM
title_full	KINETICS AND MECHANISM OF OXIDATION OF PENTAERYTHRITOL BY DITELLURATOARGENTATE(III) IN ALKALINE MEDIUM
title_fullStr	KINETICS AND MECHANISM OF OXIDATION OF PENTAERYTHRITOL BY DITELLURATOARGENTATE(III) IN ALKALINE MEDIUM
title_full_unstemmed	KINETICS AND MECHANISM OF OXIDATION OF PENTAERYTHRITOL BY DITELLURATOARGENTATE(III) IN ALKALINE MEDIUM
title_sort	kinetics and mechanism of oxidation of pentaerythritol by ditelluratoargentate(iii) in alkaline medium
publisher	Sociedad Chilena de Química
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000200011
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KINETICS AND MECHANISM OF OXIDATION OF PENTAERYTHRITOL BY DITELLURATOARGENTATE(III) IN ALKALINE MEDIUM

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