Kinetics and Mechanism of the Oxidation of Orange II by Chlorate Ion in Aqueous Hydrochloric Acid

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B. Myek
S. O. Idris
A. D. Onu
M. K. Yakubu

Abstract

Communication in Physical Sciences 2020, 5(2):165-170


Authors: B. Myek, S. O. Idris, A. D. Onu and M. K. Yakubu


Received 05 March 2020/Accepted 03 May 2020


The kinetics of the oxidation of orange II (OR-) by ClO3-was studied in aqueous hydrochloric acid where the ionic strength and other parameters of the reaction mixture was, I = 0.50 mol dm-3 (NaCl), [H+] = 5.0  10-2 mol dm-3 (HCl) and T = 21 +/_ 1o C. The redox reaction displayed a stoichiometry of 1:2 and obeys the rate law given as,−????[????????−]/???????? = ????[????][????????][???????????? ]. The observed second order rate constant was found to increases with increase in hydrogen ion concentration. The rates of reaction displayed a zero salt effect and was inhibited by some added cations and anions. From the Michaelis-Menton Buck plot, there was no evidence for the formation of intermediate during the course of the reaction. Based on the results obtained, the outersphere mechanism was proposed for the reaction. 

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Author Biographies

B. Myek , Kaduna State University, Nigeria

Department of Chemistry

S. O. Idris , Ahmadu Bello University, Zaria, Nigeria

Department of Chemistry

A. D. Onu , Federal College of Education, Zaria, Nigeria

Department of Chemistry

M. K. Yakubu, Ahmadu Bello University, Zaria, Nigeria

Department of Polymer and Textile Engineering

References

Adetoro, A., Ladipo, M. K., Popoola, O. E. &. Edokpayi, J. N. (2014). Electron transfer reaction and mechanism of crystal violet with bromate ion in aqueous hydrochloric acidic medium. World Journal of Chemistry, 9.2, pp. 20-23, 2014

Adetoro, A., Iyun, J.F., & Idris, S.O. (2010). Kinetics and mechanism of oxidation of pyrocatechol Violet bychlorite ion in aqueous hydrochloric acid. Archives of Applied Science Research, 2.6, pp 177-184.

Callaway, T.R., Anderson, R.C., Genovese, K.J., Poole, T.J., Anderson, J.A., Byrd, L.F.& Nisbet, D.J. (2002). Sodium chlorate supplementation reduces E. Coli 0157:H7 populations in cattle. Journal of Animal. Science, 80, pp. 1683 - 1689.

Edokpayi, J. N., Iyun, J. F. and Idris, S. O. (2011). A kinetic study of the redox reaction of indigo caramine by nitrite ion in aqueous hydrochloric acid medium. Physical Chemistry- An Indian Journal, 6, 1, 9-13.

Gamra, Z. A. (2015). Kinetic, thermodynamic studies for oxidation of rosaniline hydrochloride dye by kenetic and thermodynamic studies for oxidation of rosaniline hydrochloride dye by persulfate in ambient temperature. Desalination and water treatment 57, 19, pp. 1-6

Gupta, K.S. & Gupta, Y.K. (1984).Hydrogen ion dependence of reaction rates and mechanism. Journal of Chemical Education, 61, pp. 972978.

Idris, S. O, Bako, B, Iyun J. F & Myek, B (2014). Kinetics and Mechanism of the Oxidation of Bromopyrogallol Red by Bromate Ion in Aque

y ous Hydrochloric Acid Medium. International Journal of modern chemistry, 6, 2, pp. 87-95.

Mark, H. F. Othmer, O .F., Overbrger, C. .G. & Seaborg, G. T. (1978).Encyclopedia of Chemical Technology, John Wiley and Sons, USA, pp.387-406.

Mohammed, Y, Etonihu, A. C.& Tsaku, V. A (2011). Hexamethylpararosalinine chloride (crystal violet) oxidation by chlorate ions in aqueous acidic medium: kinetic approach to the mechanism of reaction. Trakia Journal of Sciences, 9, 2, pp. 1-7.

Mohammed, Y. Etonihu, A.C.& Tsaku, V. A.(2013). Hexamethylpararosalinine Chloride (Crystal Violet) Oxidation by Chlorate ions in Aqueous Acidic Medium: Kinetic Approach To The Mechanism of Reaction. Trakia Journal of Sciences, 9, 2, pp. 1-7.

Mohammed, Y., Etonihu, A. C. & Tsaku, V. A. (2011). Hexamethylpararosalnine chloride (crystal violet) oxidation by chlorate ions in aqueous acidic medium: kinetic approach to the mechanism of reaction. Trakia Journal of Sciences, 9, 2, 1-7. Munichandraiah, N & Sathyanarayana, S.(1987). Kinetics and mechanism of anodic oxidation of chlorate ion to perchlorate ion on lead dioxide electrodes. Journal of Applied Electrochemistry 17, 1, pp. 33-– 48.

Olajire, A. A. & Olajide, A. J. (2014). Kinetic Study of Decolorization of Methylene Blue with

Sodium Sulphite in Aqueous Media: Influence of Transition Metal Ions. Journal of Physical Chemistry and Biophysic, 4,2, DOI: 10.4172/2161-0398.1000136

Oliver, C. E. Bauer, M. L. Caton, J.S., Anderson, R.C. & Smith, D.J. (2007). The in – vitro reduction of sodium chlorite in bovine ruminal fluid. Journal of Animal Science, 85, 2059, pp. 2059 - 2068.

Patnaik, S. K. Maharana, P. K. Saku, S. N. &Murty, G.S.N. (1991). Solid phase oxidation of iodideion by bromate, chlorate and perchlorate and the role of gamma radiation. Journal of Radioanalytical and Nuclear Chemistry, 152, 1, pp. 261- 271.

Prakash, S, Tuli, G. D. Basu, S.K. & Madan, R.D.(2006). Advanced Inorganic Chemistry. Chand and Co Ltd. New Delhi, Pp. 453.

Stephanie (2008). Practical organic chemistry.Student’s handout, Department of Chemistry, Jazan University,pp 38.

Sulaiman, B. A., Adekunle, O. A., Usman, F. Y., Jibrin, M. W & Mindia, A. A. (2019). Kinetics and mechanisms of decolorization of crystal violet by cyanide ion, in aqueous acidic medium. Chemistry Research Journal, 4, 4, pp. 84-94

Villata, L.S., Martire, D.O.&Capparelli, A.L. (1995). Oxidation of bromide by chlorate ion Journal of Molecular Catalysis, 99, 3, pp. 143- 149.