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

In which of the following reactions, the equilibrium constant will have no units of concentration ?

For which of the following reaction does the equilibrium constant depend on the units of concentration

For which of the following reaction does the equilibrium constant depend on the units of concentration?

For which of the following reaction does the equilibrium constant depend on the units of concentration?

Which of the following reaction characteristics change on addition of a catalyst to a reaction at constant temperature ? (i) Activation energy ltbr. (ii) Equilibrium constant (iii ) Gibbs enregy change (iv ) enthylpy change of reaction