Research Article | Open Access Volume 5 | Issue 1 | https://doi.org/10.15228/2015.v05.i01.p02 |
Kinetics and Mechanism of Reduction of Fe (III)-Acetohydroxamic Acid by Hydroxylamine Hydrochloride at Acidic pH
M. Hassan
Department of Chemistry, University of Karachi, Karachi, Pakistan.
S. Nisar
Department of Chemistry, University of Karachi, Karachi, Pakistan.
S. A. Kazmi
Department of Chemistry, University of Karachi, Karachi, Pakistan.
M. Qadri
Department of Chemistry, University of Karachi, Karachi, Pakistan.
S. Imad
Chemical Metrology Division, National Physical and Standard Laboratory (PCSIR), Islamabad. Pakistan.
R. Naz
Department of Chemistry, University of Karachi, Karachi, Pakistan.
| Received 06 Mar, 2015 | Accepted 21 Sep, 2015 | Published 06 Dec, 2015 |
ABSTRACT:
The complexes of Fe(III)-AHA were prepared in acetate buffer of pH 4.5, 5.0 and 5.5. Stopped flow technique was used to study the reduction of these complexes by hydroxylamine hydrochloride. The reaction shows a biphasic behavior which is significantly pH dependent. Rate of both phases increases with hydrogen ion concentration. The rate was found to be first order with respect to [Fe(III)]. The overall rate was neither first order nor second order but there was a pre-equilibrium in mechanism. Slight increase in the values of kobs might be a consequence of increased reducing power of hydroxylamine hydrochloride with pH.
How to Cite this paper?
APA-7 Style
Hassan, M., Nisar, S., Kazmi, S. A., Qadri, M., Imad, S., & Naz, R. (2015). Kinetics and Mechanism of Reduction of Fe (III)-Acetohydroxamic Acid by Hydroxylamine Hydrochloride at Acidic pH. Pakistan Journal of Chemistry, 5(1). https://doi.org/10.15228/2015.v05.i01.p02
ACS Style
Hassan, M., Nisar, S., Kazmi, S.A., Qadri, M., Imad, S. and Naz, R., 2015. Kinetics and Mechanism of Reduction of Fe (III)-Acetohydroxamic Acid by Hydroxylamine Hydrochloride at Acidic pH. Pakistan Journal of Chemistry, 5(1). https://doi.org/10.15228/2015.v05.i01.p02
AMA Style
Hassan M, Nisar S, Kazmi SA, Qadri M, Imad S, Naz R. Kinetics and Mechanism of Reduction of Fe (III)-Acetohydroxamic Acid by Hydroxylamine Hydrochloride at Acidic pH. Pakistan Journal of Chemistry. 2015 Mar 1;5(1). https://doi.org/10.15228/2015.v05.i01.p02
Chicago/Turabian Style
Hassan, M., S. Nisar, S. A. Kazmi, M. Qadri, S. Imad, and R. Naz. “Kinetics and Mechanism of Reduction of Fe (III)-Acetohydroxamic Acid by Hydroxylamine Hydrochloride at Acidic pH.” Pakistan Journal of Chemistry 5, no. 1 (2015). https://doi.org/10.15228/2015.v05.i01.p02
This work is licensed under a Creative Commons Attribution 4.0 International License.