Study Notes Details

GCSE Chemistry

Explain how pressure can affect the rate of reaction (higher chemistry)

Question:

Explain how pressure can affect the rate of reaction (higher chemistry)

Methods:


Answer:

Pressure only affects those elements that are in Gaseous state. Therefore when you increase the pressure in a reaction the gas molecules are closer together, there is an increase in density of molecules. When the molecules are closer together, they will collide more often – bang into each other more. More collisions mean more chances of a successful reaction. So ultimately your overall rate of reaction will increase meaning that the reaction will be faster. The key thing to remember is that a change in pressure only affects those molecules that are in gas state not liquid or solid.

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