Many biological reactions arc electron transfer reactions and their spontaneity

Question

Many biological reactions arc electron transfer reactions and their spontaneity can be determined by calculating the potential. E and Delta G (the prime (') indicates biochemical conditions of pH = 7) of the reaction. For the following half reactions, write the balanced equation and determine the free energy at 25 degree C which direction the reaction occurs spontaneously, and for the spontaneous reaction identify the oxidizing agent and reducing agent. NAD+ + H+ + 2e rightarrow NADH E = -0.315 V Pyruvte- + 2H+ + 2e rightarrow lactate- E = -0.185 V

Explanation / Answer

NAD + + H+ + 2e- --

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