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100 ml of 0.1 M aqueous solution of some organic compound was brought in contact with...

100 ml of 0.1 M aqueous solution of some organic compound was brought in contact with 5 mL of heptane at 20*C. GC analysis of haptane phase after equilibration shows component concentration of 0.5M. What is the partioning coefficent of this component?

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Answer #1

equilibrium is set up when rate of flow of solute in both directions (from solvent 1 to 2 and vice versa) is equal. This often occurs when the ratio of the concentration of solute in the two solvents reaches a constant value at a particular temperature.

concentration C1 / concentration C2 = constant

according to Distribution law

The partition coefficient of a solute between the two immiscible liquids can be expressed as

Partition coefficient (k) = concentration of solute in 1 / concentration of solute in 2

Partition cofficent (K) = 0.1 M / 0.5 M = 0.2

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