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General Chemistry 2 Final - Part 1 of 4
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20. Electrochemistry / Cell Potential and Gibbs Free Energy / Problem 7

In cellular respiration, molecular oxygen is reduced by NADH to produce water. This reaction is an energy-yielding process in the form of adenosine triphosphate (ATP) Using the following reduction potentials, 
O2(g) + 4 H+(aq) + 4 e → 2 H2O(l) E°red = +0.82 V 
NAD+(aq) + H+(aq) + 2 e → NADH (aq) red = −0.32 V 
At 298 K, what is the ∆G° for the reduction of O2 by NADH?

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