title: Protonation constant of some sulpha-drugs in dioxan water medium.
abstract: The dissociation constants of some sulpha-drugs have been determined potentiometrically in 10-50% (v/v) dioxan-water media at 25 degrees at ionic strength O.1M (NaClO(4)). Correlation of mole fraction of dioxan and pK gives a straight line. The pK values do not vary linearly with reciprocal of the dielectric constant of the medium at high percentage of dioxan.
authors.affiliation: Chemistry Department, D.N. College, Meerut-250002, India.
authors.forename: K
authors.initials: K
authors.lastname: Lal