91Ó°ÊÓ

We have to find out the why do chemical reactions require energy of activation.

To begin, all chemical reactions, including exothermic reactions, require activation energy. Activation energy is needed for reactants to move together and start breaking bonds. The quantity of free energy that must be added to get from the energy level of the reactants to the energy level of the transition state is the activation energy for the forward reaction.

We have to find out that energy of products is higher or lower than reactants or not.

We know that, In Exothermic reaction, the energy of the product is lower than the energy of the reactants. Therefore, in exothermic reactions, heat is released.

We have been given,

As per question demand we draw a graph of exothermic reaction.

Now, we draw a graph of exothermic reaction,