Question

In which of the following reactions, the equilibrium remains unaffected on addition of small amount of argon at constant volume?

• A. $H_2\left(g\right)+I_2\left(g\right)\rightleftharpoons 2HI\left(g\right)$
• B. $PC{l}_5\left(g\right)\rightleftharpoons PC{l}_3\left(g\right)+C{l}_2\left(g\right)$
• C. $N_2\left(g\right)+3H_2\left(g\right)\rightleftharpoons 2N{H}_3\left(g\right)$
• D. The equilibrium will remain unaffected in all the three cases.

Answer 1

The correct option is D The equilibrium will remain unaffected in all the three cases.

When small amount of argon is added at constant volume, the equilibrium of all the three reactions will remain unaffected as there is no change in the number of moles of either reactants or products.