At 250ºC, the Equilibrium Constant K_p for the Reaction PCl₅(g)

question 52

Multiple Choice

At 250ºC, the equilibrium constant K_p for the reaction PCl₅(g) PCl₃(g) + Cl₂(g) is 1.80.Sufficient PCl₅ is put into a reaction vessel to give an initial pressure of 2.74 atm at 250ºC.Calculate the pressure of PCl₅ after the system has reached equilibrium.

• A)1.50 atm
• B)1.24 atm
• C)4.24 atm
• D)0.94 atm
• E)1.12 atm

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