Consider the reaction represented by the equation: $${N_2O_{4(g)} \leftrightharpoons 2NO_{2(g)}}$$; ΔH = +x kJmol^-1. What happens when the temperature is reduced at equilibrium?

• A.Concentration of N₂O_4(g) decreases
• B.Concentration of N₂O_4(g) increases
• C.Pressure exerted by the gases increases
• D.Pressure exerted by the gases remains constant