Thermodynamic and kinetic studies on oxidation of pyrogallol red by hydrogen peroxide in the absence and presence of molybdenum(VI)

Authors
Iloukhani, H Rajali, F Zeini, A
Citation
H. Iloukhani et al., Thermodynamic and kinetic studies on oxidation of pyrogallol red by hydrogen peroxide in the absence and presence of molybdenum(VI), PHYS CHEM L, 39(2), 2001, pp. 239-247
Citations number
11
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
PHYSICS AND CHEMISTRY OF LIQUIDS
ISSN journal
00319104 → ACNP
Volume
39
Issue
2
Year of publication
2001
Pages
239 - 247
Database
ISI
SICI code
0031-9104(2001)39:2<239:TAKSOO>2.0.ZU;2-J
Abstract
The oxidation of pyrogallol red (PGR) by hydrogen peroxide has been studied both in the absence and presence of molybdenum(VI) at pH of 7.0 by spectro photometric detection. The reaction rate was studied with a fix-time method from 0.5 to 4.5 min. The effect of reagents concentration, ionic strength and temperature was studied to give the optimum conditions. At the optimizi ng conditions the rate constant, energy and entropy of activation and frequ ency factor have been calculated using the Arrhenius and Eyring plots.