KINETICS AND MECHANISM OF ELECTRON-TRANSFER REACTIONS - REDUCTION OF MERCURY(II) CHLORIDE BY L-ASCORBIC-ACID IN ACID PERCHLORATE AND CHLORIDE MEDIA

被引：4
|
作者：
AGRAWAL, A [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 / 04期
关键词：
D O I：
10.1007/BF02910905
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The kinetics of oxidation of ascorbic acid with HgCl2 in acid ClO4- and Cl- media have been studied by estimating ascorbiC acid ceremetrically. The stoichiometry of the reaction is represented by the equation 2HgCl2 + H2A --> Hg2Cl2 + A + 2H+ + 2Cl-In Cl- media the following experimental rate law was observed; -d[H2A]/dt = (k1'/K2[Cl-] + k2' + k3'K3[Cl-]) K[HgCl2][H2A]/[H+] where k1', k2' and k3' are the rate constants. Ionic strength does not affect the rate, whereas Cl- greatly retards the reaction.
引用
收藏
页码：343 / 347
页数：5
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