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JEE Main Chemistry question

ChemistryEquilibriumJEE Main

HI was heated in a sealed tube at 440°C till equilibrium was reached, HI was found to be 22% decomposed. The equilibrium constant for dissociation is:

Answer: (C)

Solution

H₂=I₂=0.11, HI=0.78. Kc=(0.11)²/(0.78)²=0.0199.

Question ID VK-136098