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http://nopr.niscpr.res.in/handle/123456789/19975| Title: | Kinetics and mechanism of oxidation of arsenic(III) by quinolinium dichromate(QDC) in aqueous perchloric acid |
| Authors: | Chimatadar, S A Salunke, M S Nandibewoor, S T |
| Issue Date: | Feb-2006 |
| Publisher: | NISCAIR-CSIR, India |
| IPC Code: | Int.Cl.8 C07B33/00 |
| Abstract: | The kinetics of oxidation of arsenic(III) by quinolinium dichromate(QDC) has been investigated spectrophotometrically over a wide range of arsenic(III) concentrations in aqueous perchloric acid medium and at a constant ionic strength. As the arsenic(III) concentration varies, from lower concentration region to higher one, the order with respect to [arsenic(III)] changes from first to zero order. In all the regions of the [arsenic(III)], the reaction is first order in [oxidant] and less than unit order in [acid] . Increase in [perchloric acid] accelerates the reaction rate. The added products, chromium(III) and arsenic(V) do not significantly affect the reaction rate. A suitable mechanism is proposed and the involved reaction constants have been evaluated. Activation parameters have also been calculated. |
| Page(s): | 388-393 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.45A(02) [February 2006] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 45A(2) 388-393.pdf | 1.23 MB | Adobe PDF | View/Open |
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