Influence of dissolved air components on the structure of water

The structure-related components of the hydration entropies at 283-323 K fo r important components of air (He, Ar, Kr, H-2, N-2, and O-2) were calculat ed from the partial molar volumes of these gases in aqueous solutions using a method proposed for estimating the entropies of dissolved species. It wa s shown that dissolved gases stabilize the local structure of liquid water. In this case, Ar, Kr, N-2, and O-2 not only stabilize the structure, but a lso contribute to an additional development of ordered-structure zones, whi ch explains the fact that the solubility increases by jump when passing fro m "light" gases to "heavier" gases.