Kinetics and Mechanism of the Reduction of Enneamolybdonickelate(IV) by Arsenite |
| |
| Authors: | Huo Guoyan Deng Yanjun Shan Jinhuan |
| |
| Institution: | (1) School of Chemistry and Environmental Science, Hebei University, Baoding, 071002, PR China |
| |
| Abstract: | The kinetics and mechanism of the reduction of enneamolybdonickelate(IV) by arsenite in aqueous acid solution was studied by spectrophotometry. The reaction rate increases with increasing concentrations of H+ and with temperature. The associated rate law is:
![$$- {\text{dc}}_{{\text{Ni}}^{{\text{IV}}} {\text{M}}} {\text{/d}}_t = \left\{ {k{\text{K}}\left {{\text{H}}_{\text{2}} {\text{AsO}}_3^ - } \right]_{\text{T}} \left {{\text{H}}^{\text{ + }} } \right]\left {{\text{Ni}}^{{\text{IV}}} {\text{M}}} \right]_{\text{T}} } \right\}/\left\{ {Ka1 + \left {{\text{H}}^{\text{ + }} } \right]{\text{ + }}K\left {{\text{H}}_{\text{2}} {\text{AsO}}_3^ - } \right]_{\text{T}} \left {{\text{H}}^{\text{ + }} } \right]} \right\}$$](/content/w821x67626h68784/11243_2004_Article_5270386_TeX2GIFIE1.gif)
. The rate constants and activation parameters of the rate-determining step were evaluated. A mechanism related to this reaction was proposed. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
