COMMISSION ON EQUILIBRIUM DATA (V.6)
Number: 560/37/95
Title: Influence of Pressure on Chemical Equilibria in Aqueous
Solutions - With Particular Relevance to Sea Water
Coordinator(s): R.H.
Byrne and S.H. Laurie
Remarks: Commission VI.1
Completion Date: 1999
Objective:
The aim of the project is to produce a survey of the
current knowledge in this area, covering both experimental and theoretical
studies. The influence of pressure on reaction rates and mechanisms
has been well studied, particularly in the metal complex area. Where
these studies are thought relevant they will also be included. Although
experimental data relating to the influence of pressure on aqueous equilibra
are generally sparse, the available results will be critically assessed
when possible. Our evaluation will include an examination of theoretically
predicted partial molal volumes for ion pairs and complexes in aqueous
solutions. In order to understand the chemical processes that occur
in the ocean depth we need to know how the increased pressure at these
depths (up to 1000 bars) influences both thermodynamic and kinetic processes.
Such knowledge is also of relevance to geothermal solutions and many
industrial processes (in these examples, high temperatures are also
important and have been studied far more than high pressures).
Progress:
Project Completed - Pure
Appl. Chem.,
71(5), 871-890, 1999.
Last update: 22 July 99