Depends on four things:
- Temperature
- Concentration
- Catalyst
- Size of particles (Surface area)
The Collision Theory:
Higher Temperature: particles move faster, collide more often and with more force. If the temp. is high there will be enough energy to overcome Ea.
Higher Concentration: more particles in more conc., so they collide more frequently
Large surface area: smaller pieces increase sa, more area to work on, collisions more frequent
Catalyst: increase the number of successful collisions by lowering the Ea.
Activation energy or Ea is the amount of energy needed to start a reaction
(higher temp. increases reaction)
Higher Temperature: particles move faster, collide more often and with more force. If the temp. is high there will be enough energy to overcome Ea.
Higher Concentration: more particles in more conc., so they collide more frequently
Large surface area: smaller pieces increase sa, more area to work on, collisions more frequent
Catalyst: increase the number of successful collisions by lowering the Ea.
Activation energy or Ea is the amount of energy needed to start a reaction
(higher temp. increases reaction)
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