Which of the following statements about the combustion of glucose with oxygen to form water and carbon dioxide (C6H12O6 + 6 O2 →
6 CO2 + 6 H2O) is correct? (a)- The reverse reaction, making glucose from water and carbon dioxide, must be an exergonic reaction.
(b)-This is the process of cellular respiration, an anabolic pathway that releases free energy.
(c)-The free energy lost in this combustion is less than the energy that appears as heat.
(d)-The entropy of the universe decreases as the result of this reaction.
(e)-The entropy of the products is greater than the entropy of the reactants.
E - The entropy of the products is greater than the entropy of the reactants.
Explanation:
C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O
As glucose is a large molecule and then it is transformed into many molecules of water and carbon dioxide, the entropy of the system increases. If the number of molecules increases, the disorder increases.
Initial state: 7 molecules (1 glucose + 6 oxygen)
Final state: 12 molecules (6 carbon dioxide + 6 water)
