Collision theory states that the rate of a reaction depends on successful collisions of reactant molecules. Increasing the concentration of reactants increases collisions between particles, which leads to a higher reaction rate. An increase in pressure compresses the particles into a smaller volume. This increases the frequency of collisions, resulting in an increased reaction rate.
After completing this module, you will be able to:
- Define collision theory.
- Describe the effects of concentration and pressure on reaction rates.