Collision Theory

To understand why each of these factors affects the rate of a reaction, you need to understand collision theory. Collision theory states that:

In order to react, particles must collide with enough energy and with correct orientation.

Let’s make sense of that by pulling it apart and applying it to a simple reaction:


There are three parts to this statement. We'll look at each of them separately:

Molecules must collide

with enough energy

with correct orientation

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