Question

Which of the following is not an endothermic reaction?

Options

• \[\ce{CaCO3 -> CaO + CO2}\]

• \[\ce{2H2O -> 2H2 + O2}\]

• \[\ce{6CO2 + 6H2O -> C6H12O6 + 6O2}\]

• \[\ce{C6H12O6 + 6O2 -> 6CO2 + 6H2O}\]

Answer 1

\[\ce{C6H12O6 + 6O2 -> 6CO2 + 6H2O}\]

Explanation:

This equation represents cellular respiration, a vital process where glucose breaks down in the presence of oxygen to release energy for our bodies. Because it releases energy rather than absorbing it, it is highly exothermic.