The correct option is B The condition for equilibrium is G(N2)+3G(H2)=2G(NH3) where, G is Gibbs free energy per mole fo the gaseous species measured at that partial pressure. The condition of equilibrium is unaffected by the use of catalyst, which increases the rate of both the forward and backward reactions to the same extent
At equilibrium △ G = 0
G(reactants) = G(products)
G(N2)+3G(H2)=2G(NH3)