5a) A certain reaction is completed 20% in 12.6 min at 300 K and in 3.20 min at 340 K.Calculate its activation energy.5b) Oxidation of lactate to pyruvate by cytochrome C (representing as cytochrome C(Fe*))is an important biolagical reaction. The followings are reduction reactions and the relevantstandart reduction potentials (E°) at pH = 7 and 25°C.Pyruvate + 2H* + 2e' → LactateE° = -0,185 VCytochrome C (Fe**) + e¯ → Cytochrome C (Fe2*)E° = 0.254 Vi) Write anodic, cathodic and total reactions.ii) Using the Gibss free energy and Nernst equations calculate the following equilibriumratio (K) at pH=7 and 25°C;[Cytochrome C(Fe²+)]²[Pyruvate][H*]²[Cytochrome C(Fe3+)]²[Lactate¬]

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5a) A certain reaction is completed 20% in 12.6 min at 300 K and in 3.20 min at 340 K. Calculate its activation energy.

Chemistry

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ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

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Question

5a) A certain reaction is completed 20% in 12.6 min at 300 K and in 3.20 min at 340 K.
Calculate its activation energy.
5b) Oxidation of lactate to pyruvate by cytochrome C (representing as cytochrome C(Fe*))
is an important biolagical reaction. The followings are reduction reactions and the relevant
standart reduction potentials (E°) at pH = 7 and 25°C.
Pyruvate + 2H* + 2e' → Lactate
E° = -0,185 V
Cytochrome C (Fe**) + e¯ → Cytochrome C (Fe2*)
E° = 0.254 V
i) Write anodic, cathodic and total reactions.
ii) Using the Gibss free energy and Nernst equations calculate the following equilibrium
ratio (K) at pH=7 and 25°C;
[Cytochrome C(Fe²+)]²[Pyruvate][H*]²
[Cytochrome C(Fe3+)]²[Lactate¬]

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