The oxidation of glucose to CO2 and water is a major source of energyin aerobic organisms. It is a reaction favored mainly by a large negativeenthalpy change. C6H12O6(s) + 6O2(g) → 6CO2(g) + 6H2O(1) ΔH ° = -2816 kJ/mol ΔS ° = +181 J/mol • K(a) At 37 °C, what is the value for ΔG° ?(b) In the overall reaction of aerobic metabolism of glucose, 32 moles ofATP are produced from ADP for every mole of glucose oxidized. Calculatethe standard state free energy change for the overall reaction whenglucose oxidation is coupled to the formation of ATP at 37 °C.(c) What is the efficiency of the process in terms of the percentage of theavailable free energy change captured in ATP?
The oxidation of glucose to CO2 and water is a major source of energy
in aerobic organisms. It is a reaction favored mainly by a large negative
enthalpy change.
C6H12O6(s) + 6O2(g) → 6CO2(g) + 6H2O(1)
ΔH ° = -2816 kJ/mol ΔS ° = +181 J/mol • K
(a) At 37 °C, what is the value for ΔG° ?
(b) In the overall reaction of aerobic
ATP are produced from ADP for every mole of glucose oxidized. Calculate
the standard state free energy change for the overall reaction when
glucose oxidation is coupled to the formation of ATP at 37 °C.
(c) What is the efficiency of the process in terms of the percentage of the
available free energy change captured in ATP?
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