Determination of the dissociation constants of oxalic acid and the ultraviolet spectra of the oxalate species in 3M perchlorate medium.
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.
Cruywagen
J J
JJ
Department of Chemistry, University of Stellenbosch, Stellenbosch 7600, Republic of South Africa.
Heyns
J B
JB