Solvent Extraction

Solvent extraction involves isolating a solute from a solution by extraction using an immiscible solvent in which the solute is soluble.

• TRUE

• FALSE

The ratio of solute dissolved in each layer is determined by the (a)   constant K

Solvent extraction is carried out inside a ____

• separating funnel

• burette

• volumetric flask

• round-bottom flask

In solvent extraction, the two solvents are _____ and form ____ layers.

• immiscible; two

• immiscible; one

• soluble; two

• soluble; one

In solvent extraction, the solvent should be___. Tick all that apply.

• immiscible with the liquid mixture or solution (usually water)

• one in which the solute is more soluble in than the liquid mixture or solution (usually water)

• volatile to allow the solute to be obtained by the evaporation of the solvent

• unreactive with the solute

How to maximise the amount of extracted solute?

• Single extraction using a large volume of solvent.

• Single extraction using a small volume of solvent.

• Repeat extractions