Distribution Law -

are the equilibrium concentrations of the solute in Solvent 1 and Solvent 2. KDcap K sub cap D is the Distribution Coefficient (or Partition Coefficient). Necessary Conditions and Limitations

This is the most common application. It is used to remove a desired substance from a solution by shaking it with a second, immiscible solvent in which the substance is more soluble. This is a staple technique in organic chemistry and pharmaceutical manufacturing. distribution law

The solute must not undergo association (clumping) or dissociation (breaking into ions) in either solvent. If the solute reacts with a solvent or ionizes, the formula must be modified to account for these chemical changes. Practical Applications are the equilibrium concentrations of the solute in

KD=C1C2cap K sub cap D equals the fraction with numerator cap C sub 1 and denominator cap C sub 2 end-fraction C1cap C sub 1 C2cap C sub 2 It is used to remove a desired substance

The law states that at a constant temperature, a solute will distribute itself between two immiscible liquids in such a way that the ratio of its concentrations in the two layers is constant, provided the solute exists in the same molecular state in both solvents. Mathematically, this is expressed as:

If the distribution coefficient and the solubility of a solute in one solvent are known, its solubility in the second solvent can be calculated.

The law is most accurate at low concentrations, where the solute behaves ideally.