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Kinetic Studies of the Oxidation of Iodine with Ceric Sulfate.
Author(s) -
Pan Kuan,
Chen SchoenNan
Publication year - 1964
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.196400009
Subject(s) - chemistry , sulfuric acid , iodine , sulfate , reaction rate constant , inorganic chemistry , order of reaction , reaction rate , nuclear chemistry , kinetics , organic chemistry , catalysis , physics , quantum mechanics
The Oxidation of iodine by ceric sulfate in sulfuric acid solution has been found to be of second‐order with respect to iodine and first‐order with respect to Ce(IV), by spectrophotometric measurements. CeSO 4 +2 was assumed to be the active species of ceric sulfate. The over‐all rate constants were found to be k 0 =2.66x IC 4 l 2 /M 2 I min for the reaction rate, ‐d[I 2 ]/dt=k 0 [ C3 ( IV )][ I 2 ] 2 in 1.0 M H 2 SO 4 and K″ = 1.12×10 8 I 2 / M 2 · min for the reaction rate, ‐ d [ I 2 ] /dt=k′ [ CeSO 4 2+ ] [ I 2 ] 2 .