Question

Catalysts lower the activation energy of a reaction :

• A. Providing a surface and orientation
• B. Providing an alternative mechanism with a lower activation energy
• C. Increasing temperature
• D. Both a and b

Answer 1

The correct option is D Both a and b

Catalysts are substances that increase the reaction rate without themselves being changed at the end of the reaction. They increase the reaction rate by lowering the activation energy for the reaction.Catalysts lower the activation energy of a reaction in one of two ways: Providing a surface and orientation. Providing an alternative mechanism (series of steps for the reaction to go through) with a lower activation energy.