A-LevelChemistryReaction kineticsMay/June 2018Paper 1 Q111 Mark
A chemical company used a catalyst in a chemical process. The company has now decided not to use the catalyst but to increase the temperature so that the rate of the reaction is the same as it was when the catalyst was used. Which statement about the new conditions compared to the original conditions is correct?
AThe activation energy has been decreased.
BThe activation energy has been increased.
CThere are fewer successful collisions per unit time.
DThere are more successful collisions per unit time.
✓ Correct Answer
The correct answer is B. 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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