Association in mixed solvents / by George Barger.

  • Barger, George, 1878-1939.
Date:
[1905?]
Catalogue details

Licence: Public Domain Mark

Credit: Association in mixed solvents / by George Barger. Source: Wellcome Collection.

    3/14
    CXI.—Association in Mixed Solvents. By George Barger. A year ago the author described a new method of determining molecular weights (Trans., 1904, 86, 286), based on the comparison of the vapour pressures of two solutions in a capillary tube, and it was pointed out that this method is especially useful for working with mixtures of solvents. It seemed, therefore, of interest to use it for the study of the degree of association of acids, phenols, &c., when dis¬ solved in mixtures of an associative with a non-associative liquid. As was shown by Beckmann, Paterno, Biltz, Auwers, and others, sub¬ stances containing a hydroxyl group generally have abnormally high molecular weights when dissolved in such solvents as benzene and chloroform which are themselves not associated. As these (hydroxyl- ated) substances have normal molecular weights in such solvents as