passwella.
Menu

JAMB Chemistry 2000 Question 31

Question 31

Chemical Equilibrium

N2(g) + O2(g) ⇌ 2NO(g); ΔH = + 180.6kJ mol−1
In the reaction above, increase in temperature will

  1. A.increase the quantity of N2
  2. B.increase the yield of NO
  3. C.decrease the yield of NO
  4. D.decrease the quantity of O2
Show the answer and explanation

Answer: B (increase the yield of NO)

Explanation

The forward reaction is endothermic (ΔH positive), so raising the temperature shifts the equilibrium to the right and more NO is formed.