Stopped-flow kinetic investigation of the oxidation of ascorbic acid by iron (III) benzohydroxamic acid.
The fast oxidation of ascorbic acid by Fe(III)benzohydroxamic acid complex [Fe(BHA)3] has been investigated by the stopped-flow technique in aqueous ethanol medium at three pH values (4.6, 7.0, and 9.0). The reaction exhibits a first-order dependence of rate each on [ascorbic acid] and [Fe(BHA)3], obeying Michaelis-Menton kinetics. The rate of the reaction was found to be pH-dependent.
Lakshmi
S
S
Department of Chemistry, Bharathidasan University, Tamil Nadu, India.
Saravanan
D
D
Renganathan
R
R
Velusamy
M
M
D001205:Ascorbic Acid / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D006877:Hydroxamic Acids / Q000737:chemistry*; D007700:Kinetics; D010084:Oxidation-Reduction; D013053:Spectrophotometry / Q000379:methods*; D013696:Temperature; D013997:Time Factors
D005290:Ferric Compounds; D006877:Hydroxamic Acids; C104532:tris(benzohydroxamic acid)iron(III); D001205:Ascorbic Acid