Question

Consider the reactions
(i) $PC{l}_5\left(g\right)\rightleftharpoons PC{l}_3\left(g\right)+C{l}_2\left(g\right)$
(ii) $N_2{O}_4\left(g\right)\rightleftharpoons 2N{O}_2\left(g\right)$
The addition of an inert gas at constant volume_____________.

• A. will increase the dissociation of $PC{l}_5$ as well
  as $N_2{O}_4$
• B. will reduce the dissociation of $PC{l}_5$ as well
  as $N_2{O}_4$
• C. will increase the dissociation of $PC{l}_5$ and
  step up the formation of $N{O}_2$
• D. will not disturb the equilibrium of the
  reactions

Answer 1

The correct option is D will not disturb the equilibrium of the

reactions
The addition of the inert gas at constant volume has no effect on the equilibrium of the reaction. This is because the number of moles of reactants and products is same.