title: Determination of the dissociation constants of oxalic acid and the ultraviolet spectra of the oxalate species in 3M perchlorate medium.
abstract: The dissociation constants for oxalic acid in 3.0M sodium perchlorate medium at 25.0 degrees have been determined by potentiometric and spectrophotometric titrations. The values for the concentration constants are K(a1) = (5.32 +/- 0.15) x 10(-2) and K(a2) = (1.53 +/- 0.02) x 10(-4). The absorption spectra for the individual oxalate species are reported.
authors.affiliation: Department of Chemistry, University of Stellenbosch, Stellenbosch 7600, Republic of South Africa.
authors.forename: J J
authors.initials: JJ
authors.lastname: Cruywagen
authors.forename: J B
authors.initials: JB
authors.lastname: Heyns