The equilibrium concentrations for the reaction at 300 K are [CL₂] = 0.75 M, [PCl₃] = 0.45 M and [PCl₅] = 0.73 M. Based on the calculated value of the equilibrium constant, the reaction is ________. CL₂ (g) + PCL₃ (g) PCl₅ (g)

Question

Quizplus · Accepted Answer

To determine whether the reaction is favorable or not, we need to calculate the equilibrium constant (Kc) for the given reaction. The balanced chemical equation for the given reaction is: CL₂ (g) + PCL₃ (g) ⇌ PCl₅ (g) The expression for Kc is: Kc = [PCl₅]/([CL₂] [PCl₃]) Substituting the given equilibrium concentrations into the above equation, we get: Kc = (0.73)/((0.75) (0.45)) = 1.288 Since the value of Kc is greater than 1, the reaction is favorable. Therefore, the correct answer is A) favorable.

The Equilibrium Concentrations for the Reaction at 300 K Are