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Factors the affect the rate of reaction

Increasing the temperature increases the speed of the molecules, which in turn
increases both their energy and the number of collisions.

Increasing the concentration of a solution means there are more particles in a given
volume, so collisions are more likely. However,…

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You can mark the position of activation energy on a Maxwell-Boltzmann distribution
to get a diagram like this

Only those particles represented by the area to the right of the activation energy will
react when they collide. The great majority don't have enough energy, and will simply
bounce apart.…

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Adding a catalyst has exactly this effect on activation energy. A catalyst provides
an alternative route for the reaction. That alternative route has a lower activation
energy. Showing this on an energy profile:

Be very careful if you are asked about this in an exam. The correct form of…


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