engineering chemistry MCQ #2134

For the reaction PCl5 ⇌ PCl3 + Cl2, if the degree of dissociation is α, what is the equilibrium constant Kp?

engineering chemistry MCQ #2134

  1. Question 1

    Q1. For the reaction PCl5 ⇌ PCl3 + Cl2, if the degree of dissociation is α, what is the equilibrium constant Kp?

    • A) α² / (1 - α²)
    • B) α² / (1 - α)
    • C) α / (1 - α)
    • D) α²P / (1 - α²)

    Answer: α²P / (1 - α²)

    Explanation: Kp = (αP/(1+α)) × (αP/(1+α)) / ((1-α)P/(1+α)) = α²P / (1 - α²)