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 δh 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 δh of the reaction c. by raising the energy of the products d. by raising the energy of the reactants

Answer

Brief Explanations:

A catalyst provides an alternative reaction pathway with a lower activation energy. This allows more reactant molecules to have enough energy to react, increasing the reaction - rate. The enthalpy change ($\Delta H$) of a reaction is a state - function and is not affected by a catalyst. Catalysts do not raise the energy of products or reactants.

Answer:

A. by lowering the activation energy