Question

PCl₅ dissociates as 

PCl₅(g) ⇌ PCl₃(g) + Cl₂(g) 

5 moles of PCl₅ are placed in a 200 litre vessel which contains 2 moles of N₂ and is maintained at 600 K. The equilibrium pressure is 2.46 atm. The equilibrium constant K_p for the dissociation of PCl₅ is_______x 10^-3.(nearest integer)

(Given:  R = 0.082 L atm K^-1 mol^-1 : Assume ideal gas behaviour)

Answer 1

Given: 2 mole of N₂ gas was present as inert gas.

Equilibrium pressure  = 2.46 atm