A-LevelChemistryReaction kineticsMay/June 2014Paper 1 Q11 Mark
The diagram shows a Boltzmann distribution of molecular energies for a gaseous mixture. The distribution has a peak, labelled P on the diagram. [Figure 1.1] What happens when the temperature of the mixture increases?
AThe height of the peak, P, decreases and the activation energy moves to the left.
BThe height of the peak, P, decreases and the activation energy moves to the right.
CThe height of the peak, P, decreases and the activation energy does not change.
DThe height of the peak, P, increases and the activation energy moves to the left.
✓ 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...
📋 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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