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Question:

how does the AMOUNT of a catalyst affect reaction rate?

how does the amount of a catalyst affect reaction rate?

Answer:

theoretically, the more catalyst there is, the faster the rate of reaction. this is because it is bringing more particles together quicker.
It's more the surface area than the amount, but, in general, the more catalyst exposed, the quicker the reaction will proceed.
A catalyst is actually a necessary part of the reaction. The catalyst is different on in that the catalyst returns to its original state when the catalyzed reaction completes. But that means that for each atom or molecule that goes through this reaction, there must be an atom or molecule of the catalyst to combine with. You could think of the catalyst as the buses that carry the reactants to their goal. The more buses, the faster the reactants reach their goal, but at the end, all the buses are empty, just like they started.

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