A kinetic study of the oxidation of thiourea by octacyanomolybdate(V) and octacyanotungstate(V) ions in an alkaline medium |
| |
| Authors: | J G Leipoldt L D C Bok S S Basson A J Van Wyk C R Dennis and P J Cilliers |
| |
| Institution: | (1) Department of Chemistry, University of the Orange Free State, Bloemfontein, Republic of S.A. |
| |
| Abstract: | The kinetics of the oxidation of thiourea to sulfate by octacyanomolybdate(V) and octacyanotungstate(V) ions have been studied in an alkaline medium. The reactions are first order with respect to thiourea, octacyanomolybdate(V) or octacyanotungstate(V), hydroxide and sodium ions. The observed fourth order rate constants are ca. 1.20×107 and ca. 9.80×103 M–3 min–1 for oxidation by Mo(CN)
8
3–
and W(CN)
8
3–
, respectively at 298K. A reaction mechanism is proposed.
                        (V)  (V)  .    , (V) (V),  .  1,2·107 9,8·103 M–3 –1 Mo(CN)8
–3 W(CN)8
–3 298 .   .
|
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
