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A-LevelChemistryEquilibria9701/12 · Oct/Nov 2013 · Q91 Mark

Nitrogen reacts with hydrogen to produce ammonia. N2(g) + 3H2(g) ⇌ 2NH3(g) A mixture of 2.00 mol of nitrogen, 6.00 mol of hydrogen, and 2.40 mol of ammonia is allowed to reach equilibrium in a sealed vessel of volume 1 dm³ under certain conditions. It was found that 2.32 mol of nitrogen were present in the equilibrium mixture. What is the value of Kc under these conditions?

A(1.76)² / (2.32)(6.96)³
B(1.76)² / (2.32)(6.32)³
C(2.08)² / (2.32)(6.32)³
D(2.40)² / (2.32)(6.00)³

✓ Correct answer

A: (1.76)² / (2.32)(6.96)³

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About this question

Topic
Equilibria, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source
A-Level Chemistry, Oct/Nov 2013 Paper 1 Variant 2, question 9.

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