Interaction of Phosphate with Iron(III) in Acidic Medium, Equilibrium and Kinetic Studies
作者： Fawzia Al-Sogair , Hayat M. Marafie , Nadia M. Shuaib , Hamidu Ben Youngo , Mohamed S. El-Ezaby
DOI: 10.1080/0095897021000010053
关键词: Chemical equilibrium 、 Chemistry 、 Iron(III) phosphate 、 Reaction mechanism 、 Stability constants of complexes 、 Reaction rate constant 、 Phosphate 、 Stoichiometry 、 Inorganic chemistry 、 Kinetics
摘要: Equilibrium reactions of iron(III) with phosphate were studied spectrophotometrically by UV-Vis in the pH range ∼ 1.0-2.20. The STAR-94 Program was used to determine number absorbing species as well stoichiometries and formation constants complex species. Some literature values further confirmed new different obtained. kinetics mechanism Fe(III) acidic medium. reactive found be only H3PO4 H2PO− 4 for Fe3+, FeOH2+ Fe(OH)+ 2. observed rate Tphos (total concentration phosphate) dependent, i.e. Kobs,i = A i + B C T2 phos (at a given pH).
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