Simple model of equilibration dynamics of a membrane electrode for determination of CO2
- 1 January 1987
- journal article
- Published by Institute of Organic Chemistry & Biochemistry in Collection of Czechoslovak Chemical Communications
- Vol. 52 (3) , 582-586
- https://doi.org/10.1135/cccc19870582
Abstract
A differential equation is derived describing the course of pH measured by a membrane electrode after a stepwise change in the concentration of CO2 in the measured solution on the assumption that a chemical equilibrium exists between the concentration of CO2 and pH in the solution of hydrogen carbonate forming the inner electrolyte of the membrane electrode. The equation involves chemical equilibrium constants and an adjustable parameter. Calculations were carried out for selected literature data.Keywords
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