Living organisms use energy from the metabolism of food to create an energy-rich molecule called adenosine triphosphate (ATP). The ATP then acts as an energy source for a variety of reactions that the living organism must carry out to survive. ATP provides energy through its hydrolysis, which can be sym- bolized as follows: ATP(aq)+ H2O(!) –→ ADP(aq) + P((aq) 4,G° = -30.5 kJ mol¬1 where ADP represents adenosine diphosphate and P, represents an inorganic phosphate group (such as HPO,?-). a. Calculate the equilibrium constant, K, for the above reaction at 298 K. b. The Gibbs energy obtained from the oxidation (reaction with oxygen) of glucose (C,H12O6) to form carbon dioxide and water can be used to re-form ATP by driving the above reaction in reverse. Calculate the standard Gibbs energy change for the oxidation of glucose and estimate the max- imum number of moles of ATP that can be formed by the oxidation of one mole of glucose.

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85. Living organisms use energy from the metabolism of food to
create an energy-rich molecule called adenosine triphosphate
(ATP). The ATP then acts as an energy source for a variety of
reactions that the living organism must carry out to survive.
ATP provides energy through its hydrolysis, which can be sym-
bolized as follows:
ATP(ag) + H20(1) → ADP(ag) + P(aq)
4,G° = -30.5 kJ mol¬
where ADP represents adenosine diphosphate and P; represents
an inorganic phosphate group (such as HPO,2-).
a. Calculate the equilibrium constant, K, for the above reaction
at 298 K.
b. The Gibbs energy obtained from the oxidation (reaction
with oxygen) of glucose (C,H12O6) to form carbon dioxide
and water can be used to re-form ATP by driving the above
reaction in reverse. Calculate the standard Gibbs energy
change for the oxidation of glucose and estimate the max-
imum number of moles of ATP that can be formed by the
oxidation of one mole of glucose.
Transcribed Image Text:85. Living organisms use energy from the metabolism of food to create an energy-rich molecule called adenosine triphosphate (ATP). The ATP then acts as an energy source for a variety of reactions that the living organism must carry out to survive. ATP provides energy through its hydrolysis, which can be sym- bolized as follows: ATP(ag) + H20(1) → ADP(ag) + P(aq) 4,G° = -30.5 kJ mol¬ where ADP represents adenosine diphosphate and P; represents an inorganic phosphate group (such as HPO,2-). a. Calculate the equilibrium constant, K, for the above reaction at 298 K. b. The Gibbs energy obtained from the oxidation (reaction with oxygen) of glucose (C,H12O6) to form carbon dioxide and water can be used to re-form ATP by driving the above reaction in reverse. Calculate the standard Gibbs energy change for the oxidation of glucose and estimate the max- imum number of moles of ATP that can be formed by the oxidation of one mole of glucose.
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