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Change in concentration per unit time
change in concentrationtime\frac{\text{change in concentration}}{\text{time}}timechange in concentration
mol dm−3 s−1\text{mol} \, \text{dm}^{-3} \, \text{s}^{-1}moldm−3s−1
Particles collide with sufficient energy & correct orientation
Increases rate - more particles, more collisions
Increases rate - more kinetic energy, more successful collisions
Increases rate - particles closer, more collisions
Increases rate - more particles exposed to collisions
Provides alternative pathway with lower activation energy
Gas syringe measures volume at time intervals
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