Given the following reaction at equilibrium N2(g) + 3H2(g)  ⇌  2NH3(g). Some inert gas at constant pressure is added to the system. Predict which of the following facts will be affected.

On adding inert gas at constant pressure, the equilibrium will shift in the direction where there is in increase in the no. of moles of gas (1 mole ammonia and 3 moles of hydrogen) so less ammonia is produced