*In general, we write equilibrium constant expression in terms of molar concentration or gas phase pressures.

*The pure liquids or solids do not appear in the equilibrium expression.

 

Homogeneous Equilibrium

-Equilibrium in which all the reactants and products are in the same phase is called homogeneous equilibrium reaction.

-For Example

 

 

 

 

 

 

 

 

 

 

 

 

 

Heterogeneous equilibrium

-If a reaction occurs in more than one phase, the reaction takes place in a heterogeneous equilibrium or if the reactions in which the reactants and products are present in different phases are called heterogeneous equilibrium reactions.

-For Example

 

 

 

 

 

 

 

Equilibrium Constant,   Kc = [H2O(g)]

 

 

 

Sources:

 

 

 

 

 

 

Written by: Ian Paulo Parungao