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Kinetics and Mechanism of Reduction of p-Nitroso-N,N-dimethylaniline by Sulphite lons in Acetate-Acetic Acid Buffer Solutions

Maher M. Girgis ; Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt

Puni tekst: engleski, pdf (3 MB) str. 441-448 preuzimanja: 171* citiraj
APA 6th Edition
Girgis, M.M. (1989). Kinetics and Mechanism of Reduction of p-Nitroso-N,N-dimethylaniline by Sulphite lons in Acetate-Acetic Acid Buffer Solutions. Croatica Chemica Acta, 62 (3), 441-448. Preuzeto s https://hrcak.srce.hr/175802
MLA 8th Edition
Girgis, Maher M.. "Kinetics and Mechanism of Reduction of p-Nitroso-N,N-dimethylaniline by Sulphite lons in Acetate-Acetic Acid Buffer Solutions." Croatica Chemica Acta, vol. 62, br. 3, 1989, str. 441-448. https://hrcak.srce.hr/175802. Citirano 26.02.2021.
Chicago 17th Edition
Girgis, Maher M.. "Kinetics and Mechanism of Reduction of p-Nitroso-N,N-dimethylaniline by Sulphite lons in Acetate-Acetic Acid Buffer Solutions." Croatica Chemica Acta 62, br. 3 (1989): 441-448. https://hrcak.srce.hr/175802
Harvard
Girgis, M.M. (1989). 'Kinetics and Mechanism of Reduction of p-Nitroso-N,N-dimethylaniline by Sulphite lons in Acetate-Acetic Acid Buffer Solutions', Croatica Chemica Acta, 62(3), str. 441-448. Preuzeto s: https://hrcak.srce.hr/175802 (Datum pristupa: 26.02.2021.)
Vancouver
Girgis MM. Kinetics and Mechanism of Reduction of p-Nitroso-N,N-dimethylaniline by Sulphite lons in Acetate-Acetic Acid Buffer Solutions. Croatica Chemica Acta [Internet]. 1989 [pristupljeno 26.02.2021.];62(3):441-448. Dostupno na: https://hrcak.srce.hr/175802
IEEE
M.M. Girgis, "Kinetics and Mechanism of Reduction of p-Nitroso-N,N-dimethylaniline by Sulphite lons in Acetate-Acetic Acid Buffer Solutions", Croatica Chemica Acta, vol.62, br. 3, str. 441-448, 1989. [Online]. Dostupno na: https://hrcak.srce.hr/175802. [Citirano: 26.02.2021.]

Sažetak
The kinetics of the title reduction was studied spectropho-:
tometrically in acetate-acetic acid buffer solutions at different
temperature s in the range 20 ° to 40 aC. The effect of varying
[H+] on the reduction rate was investigated at a constant ionic
strength of 0.06 mol md". The rate-order was found to be 1.0
with respect to both reactants and -0.5 with respect to the hydrogen
ion. The rate of reaction decreased with increasing hydrogen
ion concentrations. The [H+] dependency indicates the presence
of two competitive rate-determining steps. The experimental data
gave a good fit to
-d[nitroso compoundj/dt = kobs [nitroso compound]
= [nitroso compound] [sulphite]
kaKJ + kbK2Kp [H+] •
1 + Kp [H']
Activation parameters were determined and found to be L'l.S=l==
-176.09 JK-l mol-i, L'l.H=l== 17.82 kJ mol" and L'l.G=l== 70.30 kJ
mol-I. A mechanism consistent with the experimental results has
been suggested.

Hrčak ID: 175802

URI
https://hrcak.srce.hr/175802

Posjeta: 244 *