Kinetics and Mechanism of Interaction between ChromiumIII and Ethylenediaminetetra-3-Propinate in Aqueous Acidic MediaReport as inadecuate




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The kinetics of the formation of 1:1 complex of chromiumIII with ethylenediaminetetra-3-propinate EDTP was followed spectrophotometrically at lmax = 557 nm. The reaction was found to be first order in chromiumIII and was accelerated by EDTP. Increasing the pH from 3.3 to 4.7 accelerated the reaction rate, the reaction rate was retarded by increasing ionic strength and dielectric constant of the reaction medium. A mechanism was suggested to account for the results obtained which involves ion pair formation between the various species of the reactants. Values of the activation parameters obtained indicate an associative mechanism.



KEYWORDS

Kinetic; Mechanism; Substitution; Ethylenediaminetetra-3-Propinate; ChromiumIII

Cite this paper

M. Abdel-Messih -Kinetics and Mechanism of Interaction between ChromiumIII and Ethylenediaminetetra-3-Propinate in Aqueous Acidic Media,- Advances in Chemical Engineering and Science, Vol. 3 No. 1, 2013, pp. 98-104. doi: 10.4236-aces.2013.31012.





Author: Michel. F. Abdel-Messih

Source: http://www.scirp.org/



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