For an exothermic reaction,the equilibrium constant:

Observe the following equilibrium:
$Fe^{3+}_{(aq)} + SCN^{-}_{(aq)} \rightleftharpoons [Fe(SCN)]^{2+}_{(aq)}$
(yellow) (colorless) (deep red)
Addition of aqueous oxalic acid solution to the above equilibrium:

For the reaction $X_{2(g)} + 4Y_{2(g)} \rightleftharpoons 2XY_{4(g)}$,$\Delta H < 0$. According to which of the following factors is the yield of the product favored?

At $25 \ ^oC$,the reaction $SO_2Cl_2(g) \rightleftharpoons SO_2(g) + Cl_2(g)$ is in equilibrium in a closed vessel. If an inert gas,$He$,is added to this system at constant volume,which of the following statements is true?

Explain: Effect of inert gas addition on equilibrium.

In which of the following reactions,increase in the volume at constant temperature does not affect the number of moles at equilibrium?