試題詳解

9. For the reaction PCl₅(g) PCl₃(g) + Cl₂(g) at 327℃, the equilibrium constant, Kp, is 11.5. Suppose that 2.450 g PCl₅ is placed in an evacuated 500-mL bulb, which is then heated to 327℃. The partial pressure of PCl₃ at equilibrium is atm.
(A)0.1
(B)2.22
(C)1.06
(D) 0.38
(E)4.80