Suppose 75

question 18

Multiple Choice

Suppose 75.0 g of PCl₅(g) is introduced into an evacuated 3.00-L vessel and allowed to reach equilibrium at 250ºC. PCl₅(g) PCl₃(g) + Cl₂(g)
If K_P = 1.80 for this reaction, what is the total pressure inside the vessel at equilibrium? (R = 0.0821 atm • L/mol • K)

• A) 2.88 atm
• B) 2.28 atm
• C) 4.54 atm
• D) 7.43 atm
• E) 9.69 atm

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