02 Question (2 points) O See page 777 The standard potentials for the reduction

Question

02 Question (2 points) O See page 777 The standard potentials for the reduction of nicotinamide adenine dinucleotide (NAD+) and oxaloacetate (reactants in the multistep metabolism of glucose) are as follows: NAD* (a) +2H+ (ag) +2e-, NADH(aq) +H(ag ) E° =-0.33Ov Oxaloacetate (a) +2H (aq) +2e (aq) – malate ' (aq) E° = -0166 V v 14th attempt Part 1 (1 point) O See Hint Calculate the standard potential for the following reaction: Oxaloacetate” ar+ NADH(aa) +H (ag) – , malate” (ag) + NAD (ag) 164 Part 2 (1 point) a See Hint Calculate the equilibrium constant at 298.15K for the reaction. .136

Explanation / Answer

part 1

E0cell = Ecathode - Eanode

        = (-0.166)-(-0.33)

        = 0.164 v

DG0 = - nFE0cell

     = -2*96500*0.164

     = -31.652 kj/mol

part 2

DG0 = - RTlnK

-31652 = -8.314*298.15lnK

K = 3.51*10^5

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