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IR'TERPRETATION OF pH ~IEASUREBIESI-s IS ALCOHOL-WATER SOLVEXTS 1833 solution vs. R In x2 for violet solutions fall on a single line, but diverge for solutions in which complexes are formed. A similar divergence may be expected for gases that complex with a solvent.The most striking result of this investigation is seen in Fig. , where values of log za for CF,, SFc, CQ2, CH,, Ar, X,, and Hz are plotted against the solubility parameters of a series of solvents ranging from CTFIO, 5.85, to CSZ, 1O.c). We see that these two fluorides diverge strongly from a simple pattern6 to which the other gases conform remarkably well. The "force constants" of other gases, elk, obtained from their second virial co-eBcients or from their viscosity, also give a pattern agreeing well with the solubility of other gases. From these two patterns we would expect SFG, ~jrC = 201, to have about the same solubilities as ( 3 0 2 , t-/k = 205. Similarly with CF, and CH4, E/JZ = 153 and 148, re-( 6 ) Reference 5, pp. 46, 47.spectively. The solubilities of the gases of each pair are nearly the same in the fluorocarbon solvents but the two fluorides diverge in a common zig-zag manner in going to solvents with high

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Author

Roger G. Bates; Maya Paabo; R. A. Robinson

Published

1963

Language

EN

Field

Chemistry (Physical Sciences)