Equilibrium Question 640

Question: 15 moles of H2 and 5.2 moles of I2 are mixed and allowed to attain equilibrium at 500oC . At equilibrium, the concentration of HI is found to be 10 moles. The equilbrium constant for the formation of HI is [KCET 2005]

Options:

A) 50

B) 15

C) 100

D) 25

Show Answer

Answer:

Correct Answer: A

Solution:

H2 + I22HI 15 5.2 0 (15-5) (5.2-5) 10 KC=[HI]2[H2][I2]=10×1010×0.2=50



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