Question

At 473 K, equilibrium constant, K_c for decomposition of phosphorus pentachloride, PCl₅ is 8.3 x 10^-3. If decomposition is depicted as

PCl₅(g) ⇌ PCl₃(g) + Cl₂(g);

ΔH = 124.0 kJ mol^-1

Write an expression for K_c for the reaction.

Answer 1

K_c = \(\frac{[PCl_3][Cl_2]}{[PCl_5]}\)