Question

will adding more of a catalyst to a reaction always cause the speed of the reaction to increase? why or why not?

Answer 1

increasing the catalyst amount doesn't really "speed up" the reaction. I'm sure in some cases it does. What catalysts does it speeds up the reaction by taking an alternate pathway with a smaller activation energy, hence, less energy is required for the same reaction to proceed.
Remember that catalysts are NOT used up in a reaction. hence, you will have the same in the beginning and at end.

Answer 2

think of the lock and key illustration and that the catalyst is holding the reactants in a more favorable position for collisions

Answer 3

I think the question is misusing terms, it should read

"adding more of a catalyst to a reaction always cause the \(\color{red}{rate}\) of the reaction to increase"

and it's true until the point of saturation.

Answer 4

Yes, because the catalyst, although not used up in the reaction, does take part in it.
Enzymatic catalysis is an example where the rate is proportional to the amount of catalyst added.

Answer 5

i dont think so, because its just increasing the 'amount of the catalyst'. This does not increase the speed of the reaction (i mean after adding more of the catalyst while u already used some), only if the Concentration of the catalyst is changed in that case it will increase or decrees depending on the concentration used.