4.4+The+effect+of+concentration

= **THE EFFECT OF CONCENTRATION ** = How does this affect the rate of reactions?

If you INCREASE the concentration reactants in a solution, the rate of reaction INCREASES, because there are more particles moving around in the same volume. This means that the particles are MORE CROWDED so they’re more likely to bump into each other. Increasing the gas pressure in a gas has the same effect.

**DON’T BE MISTAKEN!!** Increasing concentration increases the FRE QUENC Y of collisions but DOESN’T INCREASE THE ENERGY with which the particles collide.

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