Consider the decomposition reaction of hydrogen iodide yielding hydrogen gas (H2

Question

Consider the decomposition reaction of hydrogen iodide yielding hydrogen gas (H2) and iodine vapor (I2): 2HI <=> H2 + I2 A 1 Liter vessel has 2 mols of HI placed into it. The temperature is set for the decomposition to occur. After 5 days equilibrium has been reached. If K is equal to 0.999, determine the number of mols of hydrogen gas seen in the reaction vessel at equilibrium.



a. 0.600 moles of hydrogen gas

b. 0.624 moles of hydrogen gas

c. 0.666 moles of hydrogen gas

d. 0.715 moles of hydrogen gas

e. 0.707 moles of hydrogen gas

Explanation / Answer

K = [H2][I2]/[HI] 0.999 = x^2/(2-x) x

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