engineering chemistry MCQ #2141

For the reaction PCl3 + Cl2 ⇌ PCl5, if the equilibrium constant Kc is 20, what is the value of Kc for PCl5 ⇌ PCl3 + Cl2?

engineering chemistry MCQ #2141

  1. Question 1

    Q1. For the reaction PCl3 + Cl2 ⇌ PCl5, if the equilibrium constant Kc is 20, what is the value of Kc for PCl5 ⇌ PCl3 + Cl2?

    • A) 1/20
    • B) 20
    • C) 1/√20
    • D) √20

    Answer: 1/20

    Explanation: When the reaction is reversed, Kc becomes 1/Kc, so Kc = 1/20