Question

Catalysts are used to increase the rate of a chemical reaction. Because it

• A. Decrease the activation energy of the reaction
• B. Brings about improper orientation of reactant molecules
• C. Increases the potential energy barrier
• D. Increases the activation energy of the reaction

Hint:

A catalyst works by lowering the activation energy of a reaction without being consumed in the process.

Answer 1

The Correct Option is A

Catalysts work by lowering the activation energy of the reaction. This makes it easier for reactant molecules to overcome the energy barrier and form products, thereby increasing the rate of the reaction. Catalysts do not alter the potential energy barrier or the orientation of reactant molecules, but they do provide an alternative pathway with a lower activation energy.
\[ \text{Catalyst decreases the activation energy of the reaction, thus increasing the reaction rate.} \]