For the following reaction, Kp = 0.154 at a given temperature. C (s) + 2 H2 (g) CH4 (g) At equilibrium, PCH4 = 7.9. What is the equilibrium partial pressure of H2? Give your answer to 3 significant figures.

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Chemistry

23 February, 08:16

For the following reaction, Kp = 0.154 at a given temperature. C (s) + 2 H2 (g) CH4 (g) At equilibrium, PCH4 = 7.9. What is the equilibrium partial pressure of H2? Give your answer to 3 significant figures.

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Answers (1)

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Kaylee Meza · Answer 1

7.16 (3 s. f)

Explanation:

C (s) + 2 H2 (g) CH4 (g)

The formular for Kp is given as;

Kp = P CH₄ / P H₂²

When dealing with equilibrium pressures, Solids and pure liquids are omitted.

Kp = 0.154

PCH4 = 7.9

Upon solving for P H₂;

P H₂² = P CH₄ / Kp

P H₂² = 7.9 / 0.154

P H₂ = √51.3

P H₂ = 7.16 (3 s. f)