Question

Catalyst increases the rate of reaction

• A. by decreasing $ E_{a} $
• B. by increasing $ E_{a} $
• C. by decreasing A
• D. by increasing entropy

Answer 1

Answer: (A)

The reactant molecules have to acquire a certain amount of energy before they can react to yield products. This minimum value of energy for a reaction is known as energy of activation. Catalyst can change the rate of reaction by lowering the energy of activation.