laws of distribution

Also contains definition of: logarithmic distribution coefficient in precipitation

in precipitation

During the formation of a mixed crystal from a solution containing two components 'A' and 'B', the latter may be distributed according to the equation

$K A , B = b ( a 0 − a ) a ( b 0 − b )$ .

In this homogeneous distribution, $a 0$ and $b 0$ are the respective concentrations in the solution before crystallization and $a$ and $b$ are the respective concentrations in the solution after crystallization. $K A , B$ is usually called the separation factor. The term homogeneous distribution coefficient is not recommended. Alternatively the distribution of the micro-component may follow the equation of Doerner and Hoskins

$ln ( a 0 a ) = λ ln ( b 0 b )$

(logarithmic distribution) where $λ$ is usually called the logarithmic distribution coefficient, the meaning of the other symbols remaining the same. Exactly homogeneous or logarithmic distributions are extreme cases and very seldom encountered.

Source:

Orange Book, p. 85

Interactive Link Maps
First Level	Second Level	Third Level

Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.

Last update: 2014-02-24; version: 2.3.3.

DOI of this term: https://doi.org/10.1351/goldbook.L03487.

Original PDF version: http://www.iupac.org/goldbook/L03487.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.

Current PDF version | Version for print | History of this term

PREVIOUS	L03487	NEXT
lattice distortion		layer