Question

How can I draw a simple energy profile for an endothermic reaction on which 50 kj/mol is absorbed and which has an activation energy of 100 kj/mol?

Answer 1

Hint: In a chemical reaction if energy is absorbed by the reactants then the chemical reaction is called endothermic and if the energy is going to be released after the chemical reaction with the products then the reaction is called exothermic reaction.

Complete answer:
- In the question it is asked to draw the energy profile for an endothermic reaction by using the data given in the question.
- In the question it is given that 50 kj/mol energy is absorbed and the activation energy of the reactants to reach transition state is 100 kj/mol.
- Means the potential energy of the product is 50 kj/mol.
- We are supposed to take potential energy of ox y-axis and reaction pathway on x-axis while drawing the energy profile of any chemical reaction.
- Therefore the energy profile of the given endothermic reaction is as follows.

- From the above energy profile diagram we can say that the amount of energy required to activate the reactants is 100 kj/mol.

Note:
Every reactant in a chemical reaction needs some amount of energy to reach the transition state or to form an activated complex that minimum potential energy is called activation energy or transition energy. After the formation of the activated complex only we will get the products in a chemical reaction.