Equilibrium Question 549

Question: If the equilibrium constant of the reaction $ 2HI $ ⇌ $ H_2+I_2 $ is 0.25, then the equilibrium constant of the reaction $ H_2+I_2 $ ⇌ $ 2HI $ would be [MP PMT 1989, 95]

Options:

A) 1.0

B) 2.0

C) 3.0

D) 4.0

Show Answer

Answer:

Correct Answer: D

Solution:

$ K_1 $ for reaction 2HI ⇌ $ H_2+I_2 $ is 0.25 $ K_2 $ for reaction $ H_2+I_2 $ ⇌ 2HI will be $ K_2=\frac{1}{K_1}=\frac{1}{0.25}=4 $ Because IInd reaction is reverse of Ist.



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