what is the difference between dynamic and static equilibrium?

 

Dynamic equilibrium:

A dynamic equilibrium is the state when reactants are converted to products and products are converted to reactants at an equal and constant rate. Equilibrium is the state of equal and opposite rates, not necesarily equal concentrations.

 

Static equilibrium:

Static equilibrium, also referred as mechanical equilibrium. It occurs when all particles in the reaction are at rest and there is no motion between reactants and products. In static equilibrium, dynamic forces do not act on the potential energies of the reverse and forward reactions. An example of static equilibrium is graphite getting converted into diamond. This reaction is considered at static equilibrium after it occurs because there are no more forces acting upon the reactants (graphite) and products (diamond).