Question

Explain why respiration is considered an exothermic reaction. Give the chemical equation for this reaction.

Hint:

Respiration is exothermic because it releases energy in the form of ATP, which is used for cell functions.

Answer 1

Respiration is considered an exothermic reaction because it releases energy. During cellular respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide, water, and energy. This energy is released in the form of ATP, which is used by cells for various functions such as growth, repair, and maintenance. The chemical equation for aerobic respiration, which takes place in the presence of oxygen, is: \[ \text{C}_6\text{H}_{12}\text{O}_6 (aq) + 6\text{O}_2 (g) \rightarrow 6\text{CO}_2 (g) + 6\text{H}_2\text{O} (l) + \text{Energy} \] This equation shows that glucose and oxygen react to produce carbon dioxide, water, and energy. Thus, respiration is considered an exothermic reaction because energy is released during the process.