A-LevelChemistryReaction kineticsOct/Nov 2009Paper 1 Q91 Mark
Four reactions of the type shown are studied at the same temperature. X(g) + Y(g) → Z(g) Which is the correct reaction pathway diagram for the reaction that would proceed most rapidly and with the highest yield?
AReaction pathway diagram with low activation energy and a large energy drop from reactants to products.
BReaction pathway diagram with high activation energy and a large energy drop from reactants to products.
CReaction pathway diagram with low activation energy and a moderate energy drop from reactants to products.
DReaction pathway diagram with high activation energy and a moderate energy drop from reactants to products.
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of reaction kinetics 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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