Answer
The equilibrium and its constant help us to predict the direction in which a reaction mixture will proceed to achieve equilibrium (will the equilibrium be towards the products or the reactants) and to calculate the unknown concentrations of reactants and products once equilibrium has been reached.
By studying the equilibrium, we can alter the reaction conditions in order to move the equilibrium in favor of products or reactants. We can manipulate it.
Work Step by Step
The equilibrium and its constant help us to predict the direction in which a reaction mixture will proceed to achieve equilibrium (will the equilibrium be towards the products or the reactants) and to calculate the unknown concentrations of reactants and products once equilibrium has been reached.
By studying the equilibrium, we can alter the reaction conditions in order to move the equilibrium in favor of products or reactants. We can manipulate it.