NCERT Solution for Class 10 Science Chapter 1
Chemical Reactions and Equations
Exercises Questions
Page No-15
Questions No-10
Why is respiration considered an exothermic reaction? Explain.
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In the course of respiration glucose is broken into carbon dioxide and energy is released. That’s why it is considered as an exothermic reaction.
C6H12O6(aq)+6O2→6CO2(aq)+6H2O(I)+Energy
Respiration is a process in which we inhale oxygen from the atmosphere which oxidises glucose in our body to produce carbon dioxide, water and heat is evolved.
C6H12O6(aq) + 6O2(g) ———-> 6CO2 + 6H 2O(l) + Heat
Hence, heat is evolved during respiration it is considered as an exothermic reaction.