TITLE:
Formulation of Titration Curves for Some Redox Systems
AUTHORS:
Anna M. Michałowska-Kaczmarczyk, Maciej Rymanowski, Agustin G. Asuero, Marcin Toporek, Tadeusz Michałowski
KEYWORDS:
Solution Thermodynamics, Generalized Approach To Electrolytic Systems, Generalized Electron Balance, Redox Titration
JOURNAL NAME:
American Journal of Analytical Chemistry,
Vol.5 No.13,
September
24,
2014
ABSTRACT: The formalism realised according to the Generalised Approach to
Electrolytic Systems (GATES) is presented and applied to typical redox systems
known from the laboratory practice. In any redox system, the Generalized Electron
Balance (GEB), perceived as the law of the matter conservation, is derivable
from linear combination 2·f(O) – f(H) of elemental balances: f(O) for oxygen and f(H) for hydrogen. It is an
equation linearly independent from other (charge and concentration) balances
referred to an electrolytic redox system (aqueous media) of any degree of
complexity, and named as the primary
form of GEB and then denoted as pr-GEB.
A compact equation for GEB is obtained from linear combination of 2·f(O) – f(H) with other (charge and concentration) balances. For a
non-redox electrolytic system, of any degree of complexity, the balance 2·f(O) – f(H) is not an independent equation. In the derivation of GEB, all
known components (species) of the system tested, taken in their real (i.e.,
hydrated) form, are involved in the balances, and none simplifying assumptions
are needed. The redox systems are simulated with use of an iterative computer
program.