FranklyChemistry

Partition Equilibrium Calculator

Several small extractions
are usually more effective.

MODERNISED TEACHER TOOL

Compare single and multiple solvent extractions.

Partition coefficientK = [Butanedioic acid]Ethoxyethane ÷ [Butanedioic acid]Water

K = 5 means that, at equilibrium, the concentration in Ethoxyethane is 5 times the concentration in Water.

ONE EXTRACTION

10 cm³ Ethoxyethane

Mass extracted1.667 g
3.333 g remains in Water
compared with
5 EQUAL EXTRACTIONS

5 × 2 cm³ Ethoxyethane

Total mass extracted1.895 g
3.105 g remains in Water
Additional solute recovered by splitting the solvent0.229 g37.9% of the original solute extracted

Same total Ethoxyethane volume, divided into more extractions

1
1.667 g
2
1.8 g
3
1.851 g
4
1.879 g
5
1.895 g