Low temperature oxidation of oxalic acid with potassium permanganate
- 157 Downloads
Oxidation of oxalate and oxalic acid with permanganate was studied at ordinary temperature. In the presence of mixtures of Mn2+ and Cu2+ ions the reaction is sufficiently rapid for a visual titration. The end point is attained when a lilac or a faint violet colour appears. A blank experiment is necessary as Cu2+ consumes some permanganate before the end point can be perceived. Other catalysts including Zn2+, Cd2+, Hg2+ and Ag+ ions were tried but were less efficient.
KeywordsOxidation Colour Potassium Physical Chemistry Analytical Chemistry
Unable to display preview. Download preview PDF.
- 1.Fowler, R. M., andH. A. Bright: J. Res. nat. Bur. Standards15, 493 (1935); cf. Z. analyt. Chem.111, 274 (1937/38).Google Scholar
- 2.Issa, I. M., andM. Hamdy: Anal. chim. Acta (Amsterdam)22, 558 (1960).Google Scholar
- 3.Latimer, W. M.: Oxidation Potentials, Prentice Hall, 2nd edit. 1959, p. 131.Google Scholar
- 4.Stamm, H.: Angew. Chem.47, 791 (1934).Google Scholar
- 5.Ubbelohde, A. R. J. P., cited inVogel, A. I.: Quantitative Inorganic Analysis, Longmans Green, 2nd. edit., 1955, p. 312.Google Scholar