Question

Why does every chemical reaction require a certain amount of activation energy?

Answer 1

Chemical reaction: Chemical reaction is the interaction between two or more reactants undergone to form a new compound known as a product.

Reason for every chemical reaction requiring a certain amount of activation energy:

• To begin, every chemical reaction necessitates a certain quantity of energy is required to overcome the repulsive force between reactants.
• Activation energy is the difference between the threshold energy and energy possessed by the reacting molecule.

Activation energy = Threshold energy - Average energy possessed by reacting molecule

$\mathrm{Reactant}\stackrel{\mathrm{Activation}\mathrm{energy}}{\to }\mathrm{Activated}\mathrm{complex}\stackrel{\mathrm{Energy}}{\to }\mathrm{Product}$