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Kinetics and mechanism of oxidation of phenylhydrazine and P ‐bromophenylhydrazine by hexacyanoferrate(III) in acidic medium
Author(s) -
AlSubu M. M.,
EHalawa R. Abu,
Abed H. M.
Publication year - 1990
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550221003
Subject(s) - chemistry , phenylhydrazine , kinetics , hydrazine (antidepressant) , inorganic chemistry , bromobenzene , reaction rate constant , ionic strength , medicinal chemistry , catalysis , organic chemistry , aqueous solution , chromatography , physics , quantum mechanics
Kietics of oxidation of phenylhydrazine and p ‐bromophenylhydrazine by hexacyanoferrate(III) in acidic medium have been studied. The reactions follow similar kinetics, being first order with respect to both hydrazine and exacyanoferrate(III) and inverse first order with respect to the hydrogen ion. Addition of hexacyanoferrate(II) 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.