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H 2 (g) + I 2 (g) 2 HI (g) a. Write the expression for the equilibrium constant.

ID: 589803 • Letter: H

Question

H2(g) + I2(g) 2 HI(g)


a. Write the expression for the equilibrium constant.

K =

b. Calculate K using the following concentrations of each substance at equilibrium:

[H2] = 8.6 M; [I2] = 0.087 M; [HI] = 0.27 M.

Use significant figures in reporting your answer.

K =

Be sure to answer all parts.

Consider the following reaction.

H2(g) + I2(g) 2 HI(g)


a. Write the expression for the equilibrium constant.

K =

b. Calculate K using the following concentrations of each substance at equilibrium:

[H2] = 8.6 M; [I2] = 0.087 M; [HI] = 0.27 M.

Use significant figures in reporting your answer.

K =

Explanation / Answer

a. K =[HI]2 / ( [H2] [I2])

b. K = [0.27]2 / [8.6] [0.087]

    K = 0.09743384121

    K = 0.097

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