What is heterogeneous equilibrium ? Give an example.

Explanation

The equilibrium in a system having more than one phase is called heterogeneous equilibrium. For example, the equilibrium between water vapours and liquid water in a closed container.
`H_(2)O (l) hArr H_(2)O (g)`
Heterogeneous equilibria involve pure solids or pure liquids. The molar concentration of a pure solid or liquid is constant (independent of the amount present).