How do catalysts speed up reactions?
They increase the surface area of reactants.
They stir the reactants, causing more particle collisions.
They increase the temperature of the reaction.
They lower the energy barrier of a reaction.
Catalysts speed up reactions by lowering the activation energy required for the reaction to occur. This means that with the presence of a catalyst, the reactants can more easily overcome the energy barrier and form products, leading to a faster reaction rate. Essentially, catalysts provide an alternative pathway for the reaction to occur with lower energy requirements.
so is it a b c or d
Sorry about that. The correct answer is:
d. They lower the energy barrier of a reaction.