title: A source of error in the determination of equivalence volumes of carboxylic acids from potentiometric titrations.
abstract: Emf measurements on mixtures of carboxylic acids, HA, and the corresponding bases, A, containing a high and constant salt background, show that the equation E = E(0) + glnh + j(h)h commonly used in the calculation of equivalence volumes is not strictly followed. Terms linear in [HA] and [A] should be added. The origin of these terms is discussed briefly and their influence on the accuracy of equivalence-volume determinations is evaluated.
authors.affiliation: Department of Analytical Chemistry, University of Uppsala, P.O.B. 531, S-751 21 Uppsala, Sweden.
authors.forename: A
authors.initials: A
authors.lastname: Olin
authors.forename: B
authors.initials: B
authors.lastname: Wallén