The reaction between chromium(V1) and L-ascorbic acid has been studied by spectrophotometry in the presence of aqueous citrate buffers in the pH range 5.69-7.21. The reaction is slowed down by an increase of the ionic strength. At constant ionic strength, manganese(I1) ion does not exert any appreci
Kinetic studies on the oxidation of ascorbic acid by technetium(VII)
β Scribed by F. Grases; C. Genestar; E. Amat
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 297 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0538-8066
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β¦ Synopsis
The pertechnetate ion oxidizes ascorbic acid in strong acid medium to form red species. A reaction mechanism has been developed which correctly predicts all the experimental facts. The results obtained support the postulate according to which the red species corresponds to a complex formed between Tc(V) and dehydroascorbic acid. The rate constants and Arrhenius parameters have been investigated.
π SIMILAR VOLUMES
The kinetics of oxidation of nitrite to nitrate by peroxornonophosphoric acid in aqueous acid medium have been studied. The observed monotonic fall in rate with increasing pH of the medium has been rationalized on the basis of proton-dissociation equilibria of the substrate as well as the oxidant sp
## Abstract The reduction of Fe(CN)~5~L^2β^ (L = pyridine, isonicotinamide, 4,4β²βbipyridine) complexes by ascorbic acid has been subjected to a detailed kinetic study in the range of pH 1β7.5. The rate law of the reaction is interpreted as a rate determining reaction between Fe(III) complexes and t
SIR,--JI~~ I point out tliiit in your rcport of t.lw nlecting of tlic GIiisgow Section on October fi (CIII\*:M. S: Is])., Oct. 13, 11. SlS), you oinittcd tlic main point. of riiy sllggcstioii. This \viis tlliit thc rcsistiincc to t,llc rcliitivc inovcniciit of t,wo Iiibriciitcd surfiiccs, untlcr t,l