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Kinetics and Mechanism of the Redox Reaction of Naphthol Green B with Hydrazine Dihydrochloride in Aqueous Acidic Medium

Received: 07 March 2017    Accepted: 18 March 2017    Published: 22 November 2017
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Abstract

The kinetics of the redox reaction between naphthol green B and hydrazine dihydrochloride has been studied in aqueous hydrochloric acid medium at an ionic strength, I = 0.50 mol dm-3(NaCl), [H+] = 1.0×10-4 moldm-3 (HCl) and T = 21±1°C. The redox reaction displayed a stoichiometry of 1:1 and obeys the rate law: -d[NGB3-]/dt=k2[NGB3-][N2H4.2HCl]. Change in hydrogen ion concentration of the reaction medium has no effect on the rate of the reaction. Added cations and anions inhibited the rate of the reaction. The redox reaction showed negative salt effect, with the rate decreasing with increase in ionic strength of the reaction medium. Results of the Michaelis–Menten’s plot show that an intermediate complex was not formed during the course of the reaction. The outersphere mechanism is proposed for this reaction.

DOI 10.11648/j.sjc.20170506.11
Published in Science Journal of Chemistry (Volume 5, Issue 6, December 2017)
Page(s) 76-79
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Kinetic, Naphthol Green B, Redox, Hydrazine Dihydrochloride, Intermediate

References
[1] Zhao, Q., Yuan, R., Chang, L. M., Chai, Y. Q., Zhong, X. (2004). A new amperometric glucose biosensor with naphthol green B as mediator. Chinesechem. let. Vol. 5, No. 2, pp 208–211.
[2] Cao, Y. I., Jiang, X. M., Kareem, A., Dou, Z. H., Rakeman, M. A., Zhan, M. L., Dulong, G. R. (1994). Iodination of irrigation waters as a method of supplying iodine to a severally iodine deficient population in Xinjing, China. The lancet, (344): 107-109.
[3] Mshelia, M. S., Iyun, J. F., Uzairu, A., Idris, S. (2010). Kinetics and mechanism of the oxidation of hydrazine dihydrochloride by aqueous iodine. J. Am. Sci. 6(9).
[4] Ulrich, N., Amelie, Z. C., Karin, P., Siegfried, S. (2000). Reduction of aqueous silver nitrate by hydrazine dihydrochloride. J. Am. Chem. Soc. 16(23), pp 9087–9091.
[5] Yusuf, U. F., J. F. Iyun and G. A. Ayoko, 2004. Oxidation of hypophosphorus acid by poly pyridineiron (III) complexes. Chem. Class. J. 118–122.
[6] Mohammed, Y., Iyun, J. F., Idris, S. O. (2009). Kinetic approach to the mechanism of the redox reaction of malachite green and permanganate ion in aqueous acidic medium. Afr. J. Pureand A ppl. Chem, 3: 12, 269.
[7] Rao, K. V., Rao, J. K., Sivaswaroop, P and Kumar, A. K (1987). Kinetic of stepwise oxidation of manganese (II) by S2O82- in phosphoric acid medium. Trans. Met. Chem., 12: 442–448.
[8] Przystas, T. J. and Sutin, N. (1973). Kinetic studies of anion assisted outersphere electron transfer reactions. J. Am. Chem. Soc., 95, 5545. 23: 27-35.
Author Information
  • Department of Chemistry, Kaduna State University, Kaduna, Nigeria

  • Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria

  • Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria

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    B. Myek, S. O. Idris, J. F. Iyun. (2017). Kinetics and Mechanism of the Redox Reaction of Naphthol Green B with Hydrazine Dihydrochloride in Aqueous Acidic Medium. Science Journal of Chemistry, 5(6), 76-79. https://doi.org/10.11648/j.sjc.20170506.11

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    B. Myek; S. O. Idris; J. F. Iyun. Kinetics and Mechanism of the Redox Reaction of Naphthol Green B with Hydrazine Dihydrochloride in Aqueous Acidic Medium. Sci. J. Chem. 2017, 5(6), 76-79. doi: 10.11648/j.sjc.20170506.11

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    AMA Style

    B. Myek, S. O. Idris, J. F. Iyun. Kinetics and Mechanism of the Redox Reaction of Naphthol Green B with Hydrazine Dihydrochloride in Aqueous Acidic Medium. Sci J Chem. 2017;5(6):76-79. doi: 10.11648/j.sjc.20170506.11

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  • @article{10.11648/j.sjc.20170506.11,
      author = {B. Myek and S. O. Idris and J. F. Iyun},
      title = {Kinetics and Mechanism of the Redox Reaction of Naphthol Green B with Hydrazine Dihydrochloride in Aqueous Acidic Medium},
      journal = {Science Journal of Chemistry},
      volume = {5},
      number = {6},
      pages = {76-79},
      doi = {10.11648/j.sjc.20170506.11},
      url = {https://doi.org/10.11648/j.sjc.20170506.11},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.sjc.20170506.11},
      abstract = {The kinetics of the redox reaction between naphthol green B and hydrazine dihydrochloride has been studied in aqueous hydrochloric acid medium at an ionic strength, I = 0.50 mol dm-3(NaCl), [H+] = 1.0×10-4 moldm-3 (HCl) and T = 21±1°C. The redox reaction displayed a stoichiometry of 1:1 and obeys the rate law: -d[NGB3-]/dt=k2[NGB3-][N2H4.2HCl]. Change in hydrogen ion concentration of the reaction medium has no effect on the rate of the reaction. Added cations and anions inhibited the rate of the reaction. The redox reaction showed negative salt effect, with the rate decreasing with increase in ionic strength of the reaction medium. Results of the Michaelis–Menten’s plot show that an intermediate complex was not formed during the course of the reaction. The outersphere mechanism is proposed for this reaction.},
     year = {2017}
    }
    

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    AU  - B. Myek
    AU  - S. O. Idris
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    AB  - The kinetics of the redox reaction between naphthol green B and hydrazine dihydrochloride has been studied in aqueous hydrochloric acid medium at an ionic strength, I = 0.50 mol dm-3(NaCl), [H+] = 1.0×10-4 moldm-3 (HCl) and T = 21±1°C. The redox reaction displayed a stoichiometry of 1:1 and obeys the rate law: -d[NGB3-]/dt=k2[NGB3-][N2H4.2HCl]. Change in hydrogen ion concentration of the reaction medium has no effect on the rate of the reaction. Added cations and anions inhibited the rate of the reaction. The redox reaction showed negative salt effect, with the rate decreasing with increase in ionic strength of the reaction medium. Results of the Michaelis–Menten’s plot show that an intermediate complex was not formed during the course of the reaction. The outersphere mechanism is proposed for this reaction.
    VL  - 5
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