engineering chemistry MCQ #2140

The equilibrium constant for the reaction H2 + I2 ⇌ 2HI is 50 at 700K. What is the value of Kc for HI ⇌ 1/2H2 + 1/2I2?

engineering chemistry MCQ #2140

  1. Question 1

    Q1. The equilibrium constant for the reaction H2 + I2 ⇌ 2HI is 50 at 700K. What is the value of Kc for HI ⇌ 1/2H2 + 1/2I2?

    • A) 1/√50
    • B) √50
    • C) 1/50
    • D) 50

    Answer: 1/√50

    Explanation: When the reaction is halved and reversed, Kc becomes 1/√Kc, so Kc = 1/√50