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http://nopr.niscpr.res.in/handle/123456789/46749| Title: | Kinetics and mechanism of reduction of p-nitroso-N,N-dimethylaniline by sulphite ions in acetate-acetic acid buffer solutions |
| Authors: | Girgis, Maher M |
| Issue Date: | Jul-1989 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Kinetics of the title reduction has been studied spectrophotometricaJly in acetate-acetic acid buffer solutions at different temperatures in the range 20° to 40°c' The effect of varying [H+] on the reduction rate has been investigated at constant ionic strength 'Of0.06. The rate order is 1.0 in both the reactants and - 0.5 in [H+]. The rate of reaction decreases with increase in [H+]. The [H+] dependency indicates the presence of two competitive rate-determining steps. The activation parameters have been determined and found to be  S ≠ = - 176.09 JK -1 mol-1, H≠ = 17.82 kJ mol-1 and G≠ = 70.30 kJ mol-1. A mechanism consistent with the experimental results has been suggested. |
| Page(s): | 595-598 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.28A(07) [July 1989] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 28A(7) 595-598.pdf | 2.23 MB | Adobe PDF | View/Open |
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