engineering chemistry MCQ #2148

For the reaction 2NO + O2 ⇌ 2NO2, if the equilibrium constant Kc is 10, what is the value of Kc for NO2 ⇌ NO + 1/2O2?

engineering chemistry MCQ #2148

  1. Question 1

    Q1. For the reaction 2NO + O2 ⇌ 2NO2, if the equilibrium constant Kc is 10, what is the value of Kc for NO2 ⇌ NO + 1/2O2?

    • A) 1/√10
    • B) √10
    • C) 1/10
    • D) 10

    Answer: 1/√10

    Explanation: When the reaction is halved and reversed, Kc becomes 1/√Kc, so Kc = 1/√10