In a reversible reaction,a catalyst will affect the rate of

What is the effect of adding $Kr$ (krypton) gas at equilibrium while keeping the volume of the system constant?

In the equilibrium $N_{2(g)} + 3H_{2(g)} \rightleftharpoons 2NH_{3(g)} + 22 \ kcal$,the formation of ammonia is favored by:

Which of the following can be explained by Le Chatelier's principle?

In which of the following equilibria does a change in the volume of the system not alter the number of moles?

Explain the effect of concentration on equilibrium using the following experiment:
$Fe^{3+}_{(aq)} + SCN^{-}_{(aq)} \rightleftharpoons [Fe(SCN)]^{2+}_{(aq)}$
(Yellow) (Colourless) (Deep red)