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

question 67

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. What is the partial 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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