The pK(a), values of the conjugate acid of imidazole in water-ethanol mixtures

J Oszczapowicz; M Czuryłowska

doi:10.1016/0039-9140(84)80140-x

The pK(a), values of the conjugate acid of imidazole in water-ethanol mixtures

Talanta. 1984 Jul;31(7):559-60. doi: 10.1016/0039-9140(84)80140-x.

Authors

J Oszczapowicz¹, M Czuryłowska

Affiliation

¹ Department of Chemistry, University of Warsaw, Warsaw, Poland.

PMID: 18963648
DOI: 10.1016/0039-9140(84)80140-x

Abstract

The pK(a) values of protonated imidazole in 10 different water-ethanol mixtures were determined at 25 degrees by potentiometric titration in a cell without liquid junction (glass and silver-silver bromide electrodes). The pK(a) values can be used in a standardization procedure that allows determination of pK(a) values for protonated organic nitrogen bases in aqueous ethanol.