Question

Which of the following factors will not disturb the equilibrium state of the reaction, $N_2\left(g\right)+O_2\left(g\right)\rightleftharpoons 2NO\left(g\right)$

• A. Addition of $N_2$
• B. Change in temperature
• C. Addition of catalyst
• D. None of these

Answer 1

The correct option is C Addition of catalyst

As per Le- chatelier principle,
Addition of catalyst does not disturb the equilibrium of the reaction it just alters the rate of equilibrium.
In the given reaction, the number of moles of reactants and products is same. So, pressure does not disturb equilibrium state in this reaction $n_p=n_{R}or△n=0.$
Addition of $N_2$ will shift the equilibrium toward the right.