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Title: Kinetics and mechanism of oxidation of ascorbic acid by molybdenum(VI) in acidic medium
Authors: Tripathi, P P
Mehrotra, R M
Issue Date: Sep-2004
Publisher: NISCAIR-CSIR, India
IPC Code: Int.Cl.7 C07B 35/04
Abstract: The kinetics of oxidation of ascorbic acid (H2A) by molybdenum (VI) has been investigated in acidic medium by absorbance measurement. The reaction shows a first order dependence in both ascorbic acid and Mo(VI). The order in hydrogen ion has been found to be inverse first order. The reaction rate increases with increase in ionic strength. The value of energy of activation, enthalpy of activation and entropy of activation have been computed as 63.8 kJ mol-1 , 61.3 kJ mol-1and -57.51 JK-1 mol-1 respectively. A mechanism consistent with the experimental data has also been suggested.
Page(s): 1887-1889
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.43A(09) [September 2004]

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