engineering chemistry MCQ #2183

For the reaction PCl3 + Cl2 ⇌ PCl5, if Kc = 25, what is the value of Kc for PCl5 ⇌ PCl3 + Cl2?

engineering chemistry MCQ #2183

  1. Question 1

    Q1. For the reaction PCl3 + Cl2 ⇌ PCl5, if Kc = 25, what is the value of Kc for PCl5 ⇌ PCl3 + Cl2?

    • A) 25
    • B) 1/25
    • C) 5
    • D) 1/5

    Answer: 1/25

    Explanation: When a reaction is reversed, Kc becomes 1/Kc, so the new Kc = 1/25.