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Kinetic determination of some inorganic and organic compounds by oxidation with iodate

✍ Scribed by I.I. Koukli; A.C. Calokerinos

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
354 KB
Volume
192
Category
Article
ISSN
0003-2670

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✦ Synopsis

Sulphite (5.0 X lo-'-5.0 X lo-' M), ascorbic acid and other compounds are oxidized by potassium iodate in dilute sulphuric acid; the production of iodide is monitored by an iodide-selective electrode. The time needed for a 40-mV potential change is inversely proportional to concentration. For sulphite (1.0 X 10~5-l.0 X lOA M), selectivity is improved by sweeping the sulphur dioxide formed in acidic EDTA-containing solution into the iodate solution.

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