Chapter 10 - Reaction Rates and Chemical Equilibrium - Additional Questions and Problems - Page 397: 10.54

a. The equilibrium shifts in the direction of reactants. b. The equilibrium shifts in the direction of products. c. The equilibrium shifts in the direction of reactants. d. The equilibrium shifts in the direction of reactants.

According to Le Châtelier's principle, when we add some quantity of a product to a equilibrium mixture, the equilibrium shifts in the direction of the reactants, and vice-versa. a. $N_2$ is a product, so the equilibrium shifts in the direction of reactants. b. $N_2$ is a reactant, so the equilibrium shifts in the direction of products. c. $N_2$ is a product, so the equilibrium shifts in the direction of reactants. d. $N_2$ is a product, so the equilibrium shifts in the direction of reactants.