KINETICS AND MECHANISM OF OXIDATION OF MALONIC-ACID BY CHROMIUM(VI) IN AQUEOUS PERCHLORATE MEDIUM

被引：6
作者：
RAO, I [1 ]
MISHRA, SK [1 ]
SHARMA, PD [1 ]
机构：
[1] UNIV RAJASTHAN,DEPT CHEM,JAIPUR 302004,RAJASTHAN,INDIA
来源：
TRANSITION METAL CHEMISTRY | 1992年 / 17卷 / 05期
关键词：
D O I：
10.1007/BF02910730
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The kinetics of oxidation of malonic acid, studied in aqueous acid perchlorate, conform to the rate law -d[Cr(VI)]/dt = (k2K1[H+] + k3K1K2[H+]2)1 + K1[H+][Cr(VI)]T[H2ma]T where [Cr(VI)]T and [H-2ma]T are the gross analytical concentrations of Cr(VI) and malonic acid respectively. The stoichiometry of the reaction is variable as the initial oxidation product of the organic acid undergoes further partial oxidation. The rate is also inhibited by anions and the quantitative effect of Cl- in particular has been analysed, suggesting a chloro-chromium(VI) complex. A reaction mechanism is suggested.
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页码：449 / 454
页数：6
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