Question

For the system, N₂ + O₂ ➝ 2NO 44 kcal, at equilibrium, what will be the effect of the following
(i) Increasing the temperature
(ii) Decreasing the pressure
(iii) Increasing the concentration of NO
(iv) Presence of catalyst

Answer 1

For the system,
N₂ + O₂ ➝ 2NO – 44 kcal
At equilibrium,
(i) Increasing the temperature : An increase in temperature favours the endothermic reaction because it takes up energy so it will favour the forward reaction and the yield of NO will increase.
(ii) Decreasing the pressure : Since the number of molecules of reactants and products are same, so decrease in pressure will not affect the equilibrium.
(iii) Increasing the concentration of NO : On increasing the concentration of NO, it will favour backward reaction and the yield of NO.
(iv) Presence of catalyst : It increase the rate of reaction by lowering the activation energy.