Le Chatelier's principle states that if a chemical system in dynamic equilibrium experiences a change in concentration, temperature, or pressure, then the equilibrium will shift to counteract that change. Ammonia (NH3) is a chemical fertilizer that is vital for modern farming methods. Ammonia gas is usually produced commercially from nitrogen and hydrogen gases as shown below. N2(g) + 3H2(g) 2NH3(g) ΔH = -92.4 kJ/mol The magnitude of ΔH represents the energy change for the reaction, and the negative value indicates that heat is given off. This reaction occurs very slowly at room temperature. Which of the following changes would increase the amount of NH3 formed?
-adding hydrogen
-removing hydrogen
-decreasing the pressure
-increasing the pressure
-removing ammonia
-adding ammonia