A-LevelChemistryEquilibria9701/12 · Feb/Mar 2023 · Q41 Mark

The table shows the partial pressures in an equilibrium mixture formed by the Haber process. 3H2(g) + N2(g) ⇌ 2NH3(g) [Table with columns "substance", "partial pressure/kPa" and rows "nitrogen 7000", "hydrogen 8000", "ammonia 4000"] What is the numerical value of the equilibrium constant, Kp, for this reaction?

A4.46 x 10⁻⁹

B4.76 x 10⁻⁵

C7.14 x 10⁻⁵

D2.24 x 10⁸

✓ Correct answer

A: 4.46 x 10⁻⁹

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Topic: Equilibria, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2023 Paper 1 Variant 2, question 4.

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