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How does increasing the pressure affect the reaction rate?

Answer 1

Increasing the pressure increases the reaction rate (if it's a gaseous reaction).

Collision theory basically says that gaseous chemical reactions happen when reactant molecules collide with enough energy to break their chemical bonds.

When we increase the pressure in a reaction vessel:

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Answer 2

Cameron Andrews

Increasing the pressure typically increases the reaction rate, especially for gaseous reactions, by increasing the frequency of collisions between reactant molecules.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.