# Gibbs theorem

(redirected from Entropy of mixing)
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## Gibbs the·o·rem

(gibz),
substances that lower the surface tension of the pure dispersion medium tend to collect in its surface, whereas substances that raise the surface tension tend to remain out of the surface film.

## Gibbs the·o·rem

(gibz thē'ŏr-ĕm)
Substances that lower the surface tension of the pure dispersion medium tend to collect in its surface, whereas substances that raise the surface tension tend to remain out of the surface film.

## Gibbs,

J. Willard, U.S. mathematician and physicist, 1839-1903.
Gibbs energy of activation - energy that must be added to that already possessed by a molecule(s) in order to initiate a reaction.
Gibbs free energy
Gibbs theorem - substances that lower the surface tension of the pure dispersion medium tend to collect in its surface, whereas substances that raise the surface tension tend to remain out of the surface film.
Gibbs-Donnan equilibrium - Synonym(s): Donnan equilibrium
Gibbs-Helmholtz equation - an equation expressing the relationship in a galvanic cell between the chemical energy transformed and the maximal electromotive force obtainable. Synonym(s): Helmholtz-Gibbs theory
Helmholtz-Gibbs theory - Synonym(s): Gibbs-Helmholtz equation
References in periodicals archive ?
In a similar way, it is relatively easy to show that the overall entropy of mixing is given by
In the ideal case, the entropy is made up of the entropy of fusion of the additive and the geometric entropy of mixing, and [chi] is temperature independent.
E] is the excess entropy of mixing and can be derived from the plot of [chi]T against T.
f], implying a negative heat of mixing, and the excess entropy of mixing is slightly negative.
In fact, the incompatibility of the phosphate with the polymer should lead to even lower solubility, but it is partially offset by a positive excess entropy of mixing.
The entropy of mixing of these monomers with PVC aids the blending.
entropy of mixing factor) even if the PVC and thermoset precursors were compatible.
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