select the correct answer. how does a catalyst speed up a chemical reaction? a. by lowering the activation…

select the correct answer. how does a catalyst speed up a chemical reaction? a. by lowering the activation energy b. by lowering the $delta h$ of the reaction c. by raising the energy of the products d. by raising the energy of the reactants

select the correct answer. how does a catalyst speed up a chemical reaction? a. by lowering the activation energy b. by lowering the $delta h$ of the reaction c. by raising the energy of the products d. by raising the energy of the reactants

Answer

Brief Explanation:

A catalyst provides an alternative reaction pathway with a lower activation energy, allowing more reactant molecules to have sufficient energy to react and thus speeding up the reaction. It does not change the $\Delta H$ of the reaction, nor does it raise the energy of products or reactants.

Answer:

A. by lowering the activation energy