Part I: the Solubility of Gases in Water-Methanol Mixtures and Derived Thermodynamic Properties. Part II: Rates of Solution of Gases

Abstract

The present investigation was carried out as part of a wider plan to determine the effect of methanol in breaking down the water structure in water-methanol mixtures and the possibility of preferential orientation of one or other of the constituent molecules of the solvent in the neighbourhood of the solute molecules. Work on the solution process of ions in water-methanol mixtures by Perris seemed to indicate preferential orientation of water molecules round the ion. This was shown by Debye and McAuley who stated that an ion in a mixture of polar molecules will tend to sift out the dipoles so that the more polar molecules congregate round the ion. Uncharged gas molecules however should not, and in fact do not, show any tendency to cause preferential orientation.