The temperature dependence of the disproportionation reaction of iodous acid in aqueous sulfuric acid solutions | Zendy

Smiljana Marković | Zendy; Novica Rakićević | Zendy; Djuro Misljenovic | Zendy

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The temperature dependence of the disproportionation reaction of iodous acid in aqueous sulfuric acid solutions

Author(s) -

Smiljana Marković,

Novica Rakićević,

Djuro Misljenovic

Publication year - 2002

Publication title -

journal of the serbian chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.227

H-Index - 45

eISSN - 1820-7421

pISSN - 0352-5139

DOI - 10.2298/jsc0205347m

Subject(s) - disproportionation , sulfuric acid , aqueous solution , chemistry , absorbance , ion , atmospheric temperature range , reaction rate , analytical chemistry (journal) , inorganic chemistry , thermodynamics , chromatography , organic chemistry , catalysis , physics

The aim of this work was to examine the disproportionation reaction of iodous acid, HOIO, in aqueous 0.18 mol/dm 3 H 2 SO 4 solution, by spectrophotometric measurements of the absorbance. The absorbing Hgl + -ion species were generated during the observed disproportionation process. The specific rate constants of disproportionation were calculated in the temperature range from 12 to 30°C. The average values ranged from 1.20 to 2.94 mol - 1 dm 3 s - 1 , respectively. In addition, the values ofthe activation energies were determined by a graphical method. An average value of 71.20 kJ/mol was found for the chosen temperature interval.

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