A system is said to be at equilibrium, if the entropy of the system has reached __________ value.
In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time. Usually, this state results when the forward reaction proceeds at the same rate as the reverse reaction.
As maximum change has occurred and no further change take place at equilibrium with regard to heat and work, entropy of the system reaches to a maximum value.