JEE Chemistry · Medium

Chemical and Ionic Equilibrium: Kc calculation MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
Kc calculationMediumQuestion 600407

Question

For H₂ + I₂ ⇌ 2HI, if [H₂] = [I₂] = 0.1 M and [HI] = 0.8 M at equilibrium, Kc is:
  1. A
    64
    Correct
  2. B
    8
  3. C
    0.8
  4. D
    32

Correct answer

64

Explanation

Kc = [HI]²/([H₂][I₂]) = (0.8)²/(0.1×0.1) = 0.64/0.01 = 64.