Distribution law: Difference between revisions
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Distribution law<ref> |
Distribution law<ref>Martin's Physical Pharmacy & pharmaceutical sciences; fifth edition, Patrick.J.Sinko Isbn 0-7817-6426-2, Lippincot williams & wilkins.</ref> or the nerst's distribution law gives a generalisation which governs the distribution of a solute between two non miscible solvents.This law was first given by Nerst who studied the distribution of several solutes between different appropriate pair of solvents. |
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==References== |
==References== |
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{{reflist}}Martin's Physical Pharmacy & pharmaceutical sciences; fifth edition, Patrick.J.Sinko Isbn 0-7817-6426-2, Lippincot williams & wilkins. |
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Revision as of 16:17, 23 December 2007
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Distribution law[1] or the nerst's distribution law gives a generalisation which governs the distribution of a solute between two non miscible solvents.This law was first given by Nerst who studied the distribution of several solutes between different appropriate pair of solvents.
The statement of the law is
" If a solute X distributes itself between two non miscible solvents A & B at constant temperature & X is in the same molecular condition in both the solvents, then: concentration of X in A / Concentartion of X in B = Kd"
Where Kd is called the distribution coefficient or the partition coefficient.
If C1 denotes the concentration of solute in solvent A & C2, the concentration of X in B; Nerst's distribution law can be expressed as C1/C2 = Kd
References
- ^ Martin's Physical Pharmacy & pharmaceutical sciences; fifth edition, Patrick.J.Sinko Isbn 0-7817-6426-2, Lippincot williams & wilkins.