Chemistry - Chemical Equilibrium Question with Solution | TestHub

One mole of ${\mathrm{SO}}_3$ was placed in a vessel of $1\mathrm{L}$ capacity at a certain temperature and the following equilibrium was established. $$2{\mathrm{SO}}_{3(g)}\rightleftharpoons 2{\mathrm{SO}}_{2(g)}+{\mathrm{O}}_{2(g)}$$ If 0.6 moles of ${\mathrm{SO}}_2$ were formed at equilibrium, $K_c$ for the reaction will be