Thermodynamic studies of ion transport in solution
Thermodynamic studies of ion transport in solution
The conductance values of a wide range of salts in aqueous solution, and in ethylene glycol solution, have boon measured over a range of room temperatures and a range of hydrostatic pressures up to 2000 atm. To separate the values into their ionic contributions a corresponding investigation has been made of the transference numbers using a novel and continuous voltammetric method. The procedure involved the measurement of limiting currents and drop times at a dropping mercury electrode and other electrodes under conditions of high pressure.The precision of this voltammetric method, whilst good, rcaainned inferior to that of the moving boundary method. Further, excellent values of transport numbers appeared whilst this work was in progress and wore instead made the basis of the evaluation of the single ion conductances in water. Transference numbers at high pressure in ethylene glycol solution were not measured, and the conductance results in this solvent reflect both anion and cation contributions. The activation energies, enthalpies, and volumes of transport have been evaluated and allow further consideration of the nature of the highly structured water solvent and of the lesser structured ethylene glycol.
University of Southampton
1978
Brierley, Ian David
(1978)
Thermodynamic studies of ion transport in solution.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
The conductance values of a wide range of salts in aqueous solution, and in ethylene glycol solution, have boon measured over a range of room temperatures and a range of hydrostatic pressures up to 2000 atm. To separate the values into their ionic contributions a corresponding investigation has been made of the transference numbers using a novel and continuous voltammetric method. The procedure involved the measurement of limiting currents and drop times at a dropping mercury electrode and other electrodes under conditions of high pressure.The precision of this voltammetric method, whilst good, rcaainned inferior to that of the moving boundary method. Further, excellent values of transport numbers appeared whilst this work was in progress and wore instead made the basis of the evaluation of the single ion conductances in water. Transference numbers at high pressure in ethylene glycol solution were not measured, and the conductance results in this solvent reflect both anion and cation contributions. The activation energies, enthalpies, and volumes of transport have been evaluated and allow further consideration of the nature of the highly structured water solvent and of the lesser structured ethylene glycol.
This record has no associated files available for download.
More information
Published date: 1978
Identifiers
Local EPrints ID: 458400
URI: http://eprints.soton.ac.uk/id/eprint/458400
PURE UUID: 3dd24bbe-06c0-4af1-8834-64496e0078b8
Catalogue record
Date deposited: 04 Jul 2022 16:48
Last modified: 04 Jul 2022 16:48
Export record
Contributors
Author:
Ian David Brierley
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics