Use the table below as the basis for the calculations needed to answer the following questions....

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Use the table below as the basis for the calculations needed to answer the following questions. Standard Reduction Potentials Part F What is the AE, for the reduction of lactate to pyruvate by NAD+ under standard conditions? Express your answer using

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Answer 1

Answer #1

The reaction of reduction of lactate to pyruvate by NAD+ is :

Lactate + NAD⁺ <--------> Pyruvate + NADH + H⁺

The reduction potentials for the half reactions are :

Lactate <-------> Pyruvate + 2H⁺ + 2e^- E0(oxidized) = + 0.19V

NAD⁺ + H⁺ + 2e^- <--------> NADH E0(reduced) = - 0.32V

To calculate delE0, for the overall reactions involving the two half reactions, we have to add the two reduction potential values. DelE0 = E0(red) + E0(oxi) = -0.32 + (+0.19) = -0.13 V [under standard conditions]

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