A-LevelChemistryReaction kineticsOct/Nov 2024Paper 1 Q161 Mark
The Boltzmann distribution for a mixture of gases capable of reaction is shown. The two curves represent the mixture of gases at 25°C and at 35°C. The activation energies for the catalysed and uncatalysed reactions are shown. [Figure showing Boltzmann distribution curves with Ea catalysed, Ea uncatalysed, and shaded regions w, x, y, z] Which row is correct?
Aw+x+y+z z
Bw+x+y+z x+z
Cy + z z
Dy + z x+z
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The correct answer is D. This question tests the candidate's understanding of reaction kinetics within the Chemistrysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
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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