collision frequency
What collision frequency means in Chemistry A-Level, as defined for AQA, OCR.
Definitions of collision frequency
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Reference: AQA
Reacting particles brought closer together collide more often, and a greater collision frequency scales up successful collisions, increasing the rate.
Any given particle of the other reactant meets one twice as often when concentration is doubled, so collisions become more frequent.
Collisions become more frequent, giving a greater frequency of successful collisions and a faster rate.
With more particles per unit volume, collisions between reactant particles happen more often.
Topics that use collision frequency
- Effect of concentration and pressure (AQA A-Level)
- Reaction rates (OCR A-Level)
Related terms
- successful collisions
- Activation energy
- Alternative reaction pathway
- Boltzmann distribution
- Catalysis and activation energy
- Catalyst examples
- Catalyst regenerated and not consumed
- Catalyst regenerated in the mechanism
Using collision frequency in the exam
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