A-LevelChemistryEquilibriaOct/Nov 2013Paper 1 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
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The correct answer is A. This question tests the candidate's understanding of equilibria within the Chemistrysyllabus. The examiner's mark scheme requires...
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