Equilibrium Question 774

Question: At a certain temperature, only 50% HI is dissociated into H2 and I2 at equilibrium. The equilibrium constant is:

Options:

A) 1.0

B) 3.0

C) 0.5

D) 0.25

Show Answer

Answer:

Correct Answer: A

Solution:

HI12H2+12I2at,t=000at,eq.(10.5)(0.5)(0.5)

(α=50100=0.5) Now KC=(0.5)1/2(0.5)1/20.5=1



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