KINETICS OF IODIDE-CATALYZED REACTION BETWEEN CERIUM(4) AND ARSENIC(3) IN SULFURIC ACID MEDIUM

被引：77

作者：

RODRIGUEZ, PA

PARDUE, HL

机构：

[1] Department of Chemistry, Purdue University, Lafayette

[2] Procter and Gamble Company, Cincinnati, Ohio

来源：

ANALYTICAL CHEMISTRY | 1969年 / 41卷 / 11期

关键词：

D O I：

10.1021/ac60280a004

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The oxidation-reduction reaction between Ce(IV) and As(III) as catalyzed by iodide has been studied in 0.5M sulfuric acid medium. At large ratios of [As(III)]/ [Ce(IV)] the reaction rate is proportional to iodide concentration. For values of this ratio of unity or below, the reaction rate is a nonlinear function of iodide concentration. There is a slight dependence on As(V) but no Ce(III) dependence. A reaction pathway is presented which yields a rate equation which satisfies the experimental observations over a wide range of conditions. Effects of H2SO4, HCIO4, Ag(I), Hg(II), CI−, and temperature on the reaction are discussed. © 1969, American Chemical Society. All rights reserved.

引用

页码：1369 / +

页数：1

共 13 条

[1] DETERMINATION OF CHEMICALLY COMBINED IODINE IN SEA WATER BY AMPEROMETRIC AND CATALYTIC METHODS [J].