A-LevelChemistryReaction kineticsFeb/Mar 2022Paper 1 Q151 Mark
The Boltzmann distribution for one mole of a gas at temperature T is shown. [Figure 15.1] One mole of the same gas is added, and the gas remains at temperature T. Which dotted curve shows the distribution with the added gas? [Figure 15.2]
ADiagram showing a Boltzmann distribution with a higher peak and the same overall shape as the original solid curve.
BDiagram showing a Boltzmann distribution with a lower peak and a shift to higher energies compared to the original solid curve.
CDiagram showing a Boltzmann distribution with a higher peak and a shift to lower energies compared to the original solid curve.
DDiagram showing a Boltzmann distribution with a lower peak and the same overall shape as the original solid curve.
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The correct answer is A. 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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