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

In which of the following reactions, the equilibrium remains unaffecte

1.	In which of the following reactions, the equilibrium remains unaffected on addition of small amount of argon at constant volume ?
Answer» `H_(2(g)) + I_(2(g)) hArr 2HI_((g))` `PCl_(5(g)) hArr PCl_(3(g)) + Cl_(2(g))` `N_(2(g)) + 3H_(2(g)) hArr 2NH_(3(g))` The EQUILIBRIUM will remain unaffected in all the THREE cases. Solution :In above reactions, at constant volume `H_(2(g)) + I_(2(g)) hArr 2HI_((g))` `PCl_(5(g)) hArr PCl_(3(g)) +Cl_(2(g))` `N_(2(g)) + 3H_(2(g)) hArr 2NH_(3(g))` The equilibrium constant (K) remains unaffected on addition of INERT gas in all the three cases.