Theoretical Derivation of Traube's Rule

Abstract
A theoretical derivation of Traube's rule for the surface tension of dilute aqueous solutions of homologous series of long chain compounds is given. It is demonstrated that a quantitative interpretation of the rule requires that the molecules of the chain extend randomly upward out of the surface and permit hindered rotations of the CH2 groups about each carbon‐carbon bond. It is shown that the old arguments for supposing that the molecules of the chain lie parallel to the surface for dilute solutions are unconvincing.

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