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

页码：343 / 347

页数：5

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