Dühring's rule is a scientific rule developed by

Eugen Dühring Eugen Karl Dühring (12 January 1833, Berlin21 September 1921, Nowawes in modern-day Potsdam-Babelsberg) was a German philosopher, positivist, economist, and socialist who was a strong critic of Marxism. Life and works Dühring was born in Berl ...

which states that a linear relationship exists between the temperatures at which two solutions exert the same vapour pressure. The rule is often used to compare a pure liquid and a

solution Solution may refer to: * Solution (chemistry), a mixture where one substance is dissolved in another * Solution (equation), in mathematics ** Numerical solution, in numerical analysis, approximate solutions within specified error bounds * Soluti ...

at a given

concentration In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: '' mass concentration'', ''molar concentration'', ''number concentration'', an ...

. Dühring's plot is a

graphical Graphics () are visual images or designs on some surface, such as a wall, canvas, screen, paper, or stone, to inform, illustrate, or entertain. In contemporary usage, it includes a pictorial representation of data, as in design and manufacture, ...

representation of such a relationship, typically with the pure liquid's

boiling point The boiling point of a substance is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid and the liquid changes into a vapor. The boiling point of a liquid varies depending upon the surrounding envir ...

along the x-axis and the mixture's boiling point along the y-axis; each line of the graph represents a constant concentration.

References

Engineering thermodynamics Solutions {{engineering-stub

See also

References