Question

Why emulsion is thermodynamically unstable?

Answer 1

Emulsion:

1. A mixture of two or more liquids that which are normally immiscible owing to liquid-liquid phase separation.
2. In short, in an emulsion, one liquid is dispersed in the other.
3. Thermodynamic instability means that a system exists is not at equilibrium.

Emulsion is thermodynamically unstable because:

1. There is a natural tendency for a liquid or a liquid separate.
2. As they get separated, the interfacial area of it gets reduced.
3. Apparently, its interfacial energy also gets reduced.