The enzyme glycollate oxidase is a catalyst for the reduction of cytochrome c in its oxidized form - denoted as cytochrome c (Fe³+) - by glycollate ions. The relevant standard electrode potentials Eº, relating to 25°C and pH 7, are as follows: Half cell reaction cytochrome c (Fe³+) + e- => cytochrome c (Fe²+) glyoxylate + 2H+ + 2e" => glycollate • What is the overall cell potential, Eº? • What is the standard Gibbs free energy of the cell, AGº? AGO AGO = 64.645kJ mol 64.645kJ mol Eº = -0.335 V E° = 0.165 V AGO E° = 0.335 V Standard reduction potential (V) 0.250 -0.085 31.840kJ mol
The enzyme glycollate oxidase is a catalyst for the reduction of cytochrome c in its oxidized form - denoted as cytochrome c (Fe³+) - by glycollate ions. The relevant standard electrode potentials Eº, relating to 25°C and pH 7, are as follows: Half cell reaction cytochrome c (Fe³+) + e- => cytochrome c (Fe²+) glyoxylate + 2H+ + 2e" => glycollate • What is the overall cell potential, Eº? • What is the standard Gibbs free energy of the cell, AGº? AGO AGO = 64.645kJ mol 64.645kJ mol Eº = -0.335 V E° = 0.165 V AGO E° = 0.335 V Standard reduction potential (V) 0.250 -0.085 31.840kJ mol
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:The enzyme glycollate oxidase is a catalyst for the reduction of cytochrome c in its oxidized form
- denoted as cytochrome c (Fe³+) - by glycollate ions. The relevant standard electrode potentials
Eº, relating to 25°C and pH 7, are as follows:
Half cell reaction
cytochrome c (Fe³+) + e- => cytochrome c (Fe²+)
glyoxylate + 2H+ + 2e¯ => glycollate
• What is the overall cell potential, Eº?
• What is the standard Gibbs free energy of the cell, AGº'?
AGO
AGO
=
64.645kJ
mol
=
64.645kJ
mol
E° = -0.335 V
E° = 0.165 V
AGO
E° = 0.335 V
Standard reduction potential (V)
0.250
-0.085
31.840kJ
mol
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