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http://nopr.niscpr.res.in/handle/123456789/20788| Title: | Reaction of cis-diaqua nitrilotriacetatochromate(III) with L-ascorbic acid: A kinetic study |
| Authors: | Brahma, Gouri S Mohanty, P Nanda, B |
| Issue Date: | Nov-2003 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The kinetics of the reaction of L-ascorbic acid (H2A) with cis-[Cr(NTA)(H2O)2] has been studied over the range 0.02≤[H2A]T ≤ 0.1 mol dm-3, 3.16 ≤ pH ≤ 4.64, 20.0 ≤ t ≤ 35.0°C, 0.2 ≤ I ≤ 1.0 mol dm-3 (NaClO4) and 10% ≤[MeOH] ≤ 50% (v/v). The rate of the reaction is found to increase with the increase in pH of the medium. The reaction is hardly affected by change in ionic strength and dielectric constant of the medium. Activation parameters, ΔH# and ΔS#have been found to be 39.4, 34.1, 102.0 kJ mol-1 and -168.00±0.15, -208.0±0.35, 53.0±1.4 J K-1 mol-1 for k1, k-1 and k2 path respectively. Anation of cis-[Cr(NTA)(H2O)2] and [Cr(NTA) (OH2)(OH)]- follow Ia and Id path respectively. |
| Page(s): | 2751-2756 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.42A(11) [November 2003] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 42A(11) 2751-2756.pdf | 1.11 MB | Adobe PDF | View/Open |
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