A kinetic study of the displacement reaction between nickel(II) and zinc-ethylenediaminetetraacetate by a radiometric method

D. Hamilton; M. Menon

doi:10.1007/bf02517719

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 33: Issue 2

A kinetic study of the displacement reaction between nickel(II) and zinc-ethylenediaminetetraacetate by a radiometric method

Authors:

D. Hamilton

D. Hamilton Savannah State College Department of Chemistry Savannah Ga. (USA)

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and

M. Menon

M. Menon Savannah State College Department of Chemistry Savannah Ga. (USA)

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Pages:: 163–173

Online Publication Date:: 09 Jan 2007

Publication Date:: 01 Sep 1976

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02517719

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Abstract

A radiometric study of the kinetics of the displacement reaction between nickel(II) and⁶⁵Zn-labeled zinc salt of ethylenediaminetetraacetic acid, which was previously used by the authors for the analysis of trace quantities of nickel, has been carried out under varying conditions of temperature, pH etc. The above reaction was confirmed to be first order with respect to both Ni²⁺ and to^*ZnEDTA. The overall reaction rate constant, k_f, has been shown to be inversely proportional to the concentration of Zn²⁺ and directly proportional to the concentration of H⁺. From the dependence of the rate constant on the concentration of Zn²⁺ and H⁺ a three-step mechanism is proposed for the above reaction. The values for E_a, ΔH^‡, ΔG^‡ and ΔS^‡ for the overall reaction have been computed from the experimental data.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)