Question

Why is respiration an exothermic reaction?

Answer 1

Exothermic reaction:

• Exothermic reactions are those reactions in which heat energy is exchanged from system to surroundings or heat is evolved during the reactions.
• Examples: Burning of a candle.

Respiration:

• Respiration is a kind of burning fuel.
• During respiration, Carbohydrates present in food are broken down to form glucose.
• Glucose combines with oxygen in the cells of our body and provides energy.
• Therefore, respiration is an exothermic reaction.