A-LevelChemistryReaction kineticsFeb/Mar 2022Paper 1 Q161 Mark
In the reaction shown, the concentrations of both X and Y are reduced to half of their original values whilst keeping the total volume of the solution constant. X(aq) + Y(aq) → XY(aq) Simultaneously the temperature is increased from 298 K to 348 K. Which prediction is definitely true?
Asmaller proportion of collisions between particles of X and particles of Y will be successful.
BThe average kinetic energy of particles of X and particles of Y will increase.
CThe rate of the reaction will be unaffected.
DThe frequency of collisions between particles of X and particles of Y will halve.
✓ 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...
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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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