- Reactions take place when particles collide with a certain amount of energy
- The minimum amount of energy needed for the particles to react is called the activation energy and is different for each reaction.
- If particles dont have enough energy, they wont be able to react
The rate depends on:
- Frequency of collisions between particles
- Amount of energy with which the particles collide
You can increase the rate by:
- Increasing temperature
- Increasing the surface area
- Concentration/ Pressure
- Use of a catalyst
The rate of reaction is fastest at the beginning where there is 100% of reactant, so the frequency on collisions is very high. The rate stops when the line on a graph levels out as there are no reactants left so the frequency of collisions is 0%
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