Duhring’s rule

Dolezalek s theory of mixtures, 402 rule, 403 Double-layer, 454, 470 Duhem s theorem, 219 Margule s equation, 395 Duhring s rule, 180... 

A method of interpolating surface tensions similar in principle to Duhring s rule for vapour pressures ( 18.VIII J) was used by Carr and Wolczynski. In the equation ... 

Duhring s rule. Relates the vapor pressure of similar substances at different temperatures. A straight or nearly straight line results if the temperature at which a liquid exerts a particular pressure is plotted on a graph against the temperature at which some similar reference liquid exerts the same vapor pressure. Water is most frequently used as a reference liquid since its vapor pressure at various temperatures is well known. 

Plot of boiling points of acetic acid and water following Duhring s rule... 

Duhring s rule states that a linear relationships exists between the boiling point of a solution and the boiling point of pure water at the same pressure. Thus, the temperature difference between the boiling point in an evaporator and the boiling point of water at the same pressure is a direct measurement of the concentration of the solution. Two problems in making this measurement are location of the temperature sensors and control of absolute pressure. 

U. DUhring altered Dalton s rule by comparing the vapour pressures at... 

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