If ${\mathrm{K}}_{\mathrm{C}}$ is in the range of ${10}^{-3}$to ${10}^3$

The following diagram gives the information about the extent of reaction

Hence, the range of equilibrium constant ${\mathrm{K}}_{\mathrm{C}} \mathrm{to} \mathrm{be} {10}^3 \mathrm{to} {10}^3$

At the equilibrium point, both the reactants and products should be in equilibrium.