Question

For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what will happen if more nitrogen gas is added?

A. there will be a shift towards the products
B. there will be a shift towards the reactants
C. there will not be a shift in equilibrium
D. the value for Keg will change

Answer 1

If more nitrogen gas is added to the reaction, the system will favor the forward reaction to reduce the added nitrogen gas. Concentration of ammonia will increase, while concentrations of nitrogen gas and hydrogen gas decrease. The equilibrium constant remains unchanged.

Step-by-step explanation:

If more nitrogen gas (N₂) is added to the reaction N₂(g) + 3H₂(g) ⇌ 2NH₃(g), the system will respond by favoring the forward reaction to reduce the added nitrogen gas. The forward reaction uses up nitrogen gas and converts it to ammonia. As a result, the concentration of ammonia (NH₃) will increase, while the concentrations of nitrogen gas (N₂) and hydrogen gas (H₂) will decrease. The equilibrium constant, Keg, will not change as a result of the added nitrogen gas.