Question

Which of the following is not true for the equilibrium reaction? $N_2\left(h\right)+O_2\left(g\right)\rightleftharpoons 2NO\left(g\right);\Delta H=180$kJ $mo{l}^{-1}$.

• A. The formation of NO is increased at higher temperature
• B. The volume change at constant pressure does not affect the equilibrium
• C. The pressure change at constant volume does not affect the equilibrium
• D. The formation of NO is decreased at higher temperature

Answer 1

The correct option is D The formation of NO is decreased at higher temperature

solution:

option a:

It's an endothermic reaction as $\Delta H$ is positive as temperature increases equilibrium will try to balnce it out by moving right side so its true

option b :

on increasing pressure there is no change in equilibrium as $\Delta n=0$

option C :

on increasing volume there is no change in equilibrium as $\Delta n=0$

option d:

It's an endothermic reaction as $\Delta H$ is positive as temperature increases equilibrium will try to balnce it out by moving right side so it is not true

hence the correct opt: D