Partially miscible

Definition

Partially miscible liquids are those that can dissolve in each other but only to a limited extent. Beyond a certain concentration, two distinct liquid layers will form.

5 Must Know Facts For Your Next Test

1. Partially miscible liquids form two distinct layers when mixed beyond their solubility limit.
2. Examples include water and ether or water and phenol.
3. The degree of partial miscibility depends on temperature and pressure.
4. Phase diagrams can be used to represent the solubility limits of partially miscible liquids.
5. The border between the two phases is called the binodal curve.

Review Questions

• What happens when you mix partially miscible liquids beyond their solubility limit?
• Give an example of a pair of partially miscible liquids.
• How does temperature affect the partial miscibility of liquids?

Related terms

Miscible: Two substances that can mix in all proportions without forming separate phases.

Immiscible: Two substances that do not mix to form a solution, resulting in separate layers.

Solubility Limit: The maximum concentration of one substance that can dissolve in another at a given temperature and pressure.