In any reversible chemical reaction reactants produces products and the products reverse to form reactants.
The conversion of reactant to product and product to reactant occurs to attain the stability of the reaction with no change in the property of the system and so a new term was coined called “ Equilibrium or Chemical equilibrium”.
Chemical equilibrium is the state where the concentration rates on both sides of the reaction are equal whether the molecules are in the same phase or not.
The same number of molecules doesn't need to be present on both sides of the reaction.
But it is to be noted that attaining the equilibrium will equalize the concentration of reactant as well as the products.
It can be used widely in many chemical reactions as well as used for industrial purposes.
The equilibrium chemical reaction is represented as:
Homogenous chemical equilibrium: The given reaction is in the same state, i.e. the reactants and products are present in the same state.