A-LevelChemistryEquilibriaOct/Nov 2009Paper 1 Q321 Mark
Which equilibria, in which all species are gaseous, would have equilibrium constants, Kp, with no units? 1 sulfur dioxide and oxygen in equilibrium with sulfur trioxide 2 hydrogen and iodine in equilibrium with hydrogen iodide 3 carbon monoxide and steam in equilibrium with carbon dioxide and hydrogen
A1, 2 and 3 are correct
B1 and 2 only are correct
C2 and 3 only are correct
D1 only is correct
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The correct answer is C. This question tests the candidate's understanding of equilibria within the Chemistrysyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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