Na2TeO3 Oxidation in presence of 1-Cyanoacetyl-3, 5-dimethyl-1H-pyrazole in aqueous Na2SO4 cyclic voltammetrically

Gomaa, E.A.; Zaky, R.R.; Elafifi, S.E.

doi:10.21608/mjcc.2020.412849

	Na2TeO3 Oxidation in presence of 1-Cyanoacetyl-3, 5-dimethyl-1H-pyrazole in aqueous Na2SO4 cyclic voltammetrically
Mansoura Journal of Chemistry
Volume 47, Issue 1, February 2020, Page 11-16 PDF (1.08 MB)
Document Type: Original Article
DOI: 10.21608/mjcc.2020.412849
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Authors
E.A. Gomaa^* ; R.R. Zaky; S.E. Elafifi
Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
Abstract
Oxidation of sodium tellurite (Na₂TeO₃) was studied in the absence and presence of prepared 1-Cyanoacetyl-3, 5-dimethyl-1H-pyrazole (H₂CADMP) by using cyclic voltammetry in 0.1M Na₂SO₄ electrolytic solution at 291K. Cyclic Voltammogram showed no reduction peaks that mean oxidation only is happened. Glassy carbon electrode (GCE), Ag/AgCl, and Pt wire were used as working electrode, reference electrode and counter electrode, respectively, in the conventional three electrodes cell. The oxidation stability constants and Gibbs free energies of oxidation resulting from the interaction of Na₂TeO₃ with H₂CADMP were estimated and their values were discussed.
Keywords
Cyclic voltammetry; Oxidation; Sodium Tellurite; 1-Cyanoacetyl-3; 5-dimethyl-1H-pyrazole; stability constant; Gibbs free energy; Solvation and kinetic parameters


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