Calculate the equilibrium constant (Kc) for the given reaction and tell whether equilibrium lies to the left or the right.
PCl5 (g) ↔ PCl3 (g) + Cl2 (g)
Equilibrium concentrations are: [PCl5] = 0.25 M, [PCl3] = 9.7 × 10-4 M, and [Cl2] = 3.2 × 10-3 M.