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Kinetics and Mechanism of Potassium Persulfate Decomposition in Aqueous Solutions Studied by a Gasometric Method
Author(s) -
Beylerian Norair M.,
Vardanyan Louisa R.,
Harutyunyan Romik S.,
Vardanyan Razmik L.
Publication year - 2002
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/1521-3935(20020101)203:1<212::aid-macp212>3.0.co;2-3
Subject(s) - chemistry , potassium persulfate , aqueous solution , solvation , activation energy , decomposition , persulfate , kinetics , reaction mechanism , oxygen , inorganic chemistry , ion , organic chemistry , polymerization , catalysis , physics , quantum mechanics , polymer
Using a gasometric method the persulfate decomposition rate in aqueous solutions at different pH values in the temperature range 323 K < T < 363 K has been studied. In all cases oxygen evolution is quantitative and proceeds by radical mechanism. The activation energy of oxygen evolution is practically equal to the value obtained by using different methods. A new mechanism is proposed based on a “solvation effect”.