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Kinetics and mechanism of oxidation of phenylhydrazine and P-bromophenylhydrazine by hexacyanoferrate(III) in acidic medium

✍ Scribed by M. M. Al-Subu; R. Abu E-Halawa; H. M. Abed

Publisher: John Wiley and Sons
Year: 1990
Tongue: English
Weight: 396 KB
Volume: 22
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550221003

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✦ Synopsis

Kinetics of oxidation of phenylhydrazine and p-bromophenylhydrazine by hexacyanoferrate(I1If in acidic medium have been studied. The reactions follow similar kinetics, being first order with respect to both hydrazine and hexacyanoferrate(II1) and inverse first order with respect to the hydrogen ion. Addition of hexacyanoferrate(I1) has no retarding effect on the rate of oxidation. The effects of varying ionic strength, dielectric constant, and temperature on the reaction rates have been investigated. A plausible mechanism has been proposed to account for the experimental results. Benzene and bromobenzene have been identified as the oxidation products.

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