Studies on Dissociation Constants

Dunsmore, Helen S (1953) Studies on Dissociation Constants. PhD thesis, University of Glasgow.

Abstract

In the first section the relation between solubility, pH and dissociation constant is applied to the determination of the dissociation constant of p-chloro-, p-bromo-aniline and benzidine by measuring the solubilities at various pHs. With p-chloro- and p-bromo-aniline the value found agreed well with that obtained by potentio-metric titration of a solution of the substance, dissolved in standard hydrochloric acid, with caustic soda using a glass electrode. With benzidine the potentiometric titration was carried out successfully but difficulties were encountered in the solubility method. The second and main section of the work is concerned with measuring the dissociation constant of benzoic acid in mixed solvents, viz. dioxan-water mixtures, by three independent methods : a) With the conductimetric method it was necessary to make measurements on potassium benzoate and potassium chloride in order to obtain an accurate value of Deltao, the conductivity at infinite dilution, for benzoic acid. pKs at 25

• Item Type: Thesis (PhD)
• Qualification Level: Doctoral
• Keywords: Physical chemistry
• Date of Award: 1953
• Depositing User: Enlighten Team
• Unique ID: glathesis:1953-78927
• Copyright: Copyright of this thesis is held by the author.
• Date Deposited: 28 Feb 2020 12:09
• Last Modified: 28 Feb 2020 12:09
• URI: https://theses.gla.ac.uk/id/eprint/78927