A-LevelChemistryEquilibria9701/12 · May/June 2014 · Q41 Mark

Hydrogen and carbon dioxide gases are mixed in equal molar amounts at 800K. A reversible reaction takes place. H2(g) + CO2(g) ⇌ H2O(g) + CO(g) At equilibrium, the partial pressures of H2 and CO2 are both 10.0 kPa. Kp is 0.288 at 800K. What is the partial pressure of CO in the equilibrium mixture?

A5.37 kPa

B18.6 kPa

C28.8 kPa

D347 kPa

✓ Correct answer

A: 5.37 kPa

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Topic: Equilibria, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2014 Paper 1 Variant 2, question 4.

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