Question

Why respiration is considered an exothermic reaction? Explain.

Answer 1

For the survival of life, we require energy. We obtain this energy from the food we eat. The food molecules, through the process of digestion is broken down into simpler molecules like glucose. These substancescome in contact with the oxygen present in our body cells to form carbon dioxide and water along with a certain amount of energy. Since the energy is in the form of heat ( which maintains our body tempreture) the respiration is considered to be an exothermic reaction. The reaction takes place is:

C6H12O6 +6 O2 = 6CO2+ 6H2O + Energy.

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Answer 2

In the process of respiration, the complex substances (food) are broken down into simpler substances and then converted into glucose. In this whole process, energy (or heat) is released.we know that a reaction in which heat is released along with the formation of products is known as an exothermic reaction.thus, from the above two points, respiration is an exothermic process.


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