Chemistry / Unit 9 Chem 1683 short lesson, about 20 seconds
Collision Theory's Rate-Collision Proportionality
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The idea
Collision theory holds that a reaction's rate is proportional to the rate at which its reactant particles collide.
In practice
Raising a gas's concentration packs more particles into the same volume, increasing how often they collide and how fast they react.
Where people slip
Concluding that any collision reacts, so rate should equal collision frequency, is wrong — most collisions fail from bad orientation or insufficient energy.
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