Physical Equilibrium

Theory

Equilibrium: 

•Some of the chemical reactions do not undergo completion.

•After some time, there is no change in concentration of reactants and products.

•Some of the reactants remain unreacted.

•Dynamic process

Physical equilibrium: occurs in three states of matter.

General characteristics:

•At a given temperature, equilibrium is achieved only in a closed system.

•There exists a dynamic but stable condition.

•All properties of the system that are measurable remain constant.

•Ratio of concentrations is constant.

H₂O (g) â‡Œ H₂O (l)

 = equilibrium constant

•Magnitude of equilibrium constant indicates the extent of the reaction.