The standard free energy change for a reaction can be calculated using the equation ΔG∘′=−nFΔE∘′ where n is the number of electrons transferred, F is Faraday's constant, 96.5 kJ·mol−1·V−1, and ΔE∘′ is the difference in reduction potential. For each of the given reactions, determine the number of electrons transferred (n) and calculate standard free energy (ΔG∘′) . Consider the half-reactions and overall reaction for reaction 1. half-reactions:
The standard free energy change for a reaction can be calculated using the equation ΔG∘′=−nFΔE∘′ where n is the number of electrons transferred, F is Faraday's constant, 96.5 kJ·mol−1·V−1, and ΔE∘′ is the difference in reduction potential. For each of the given reactions, determine the number of electrons transferred (n) and calculate standard free energy (ΔG∘′) . Consider the half-reactions and overall reaction for reaction 1. half-reactions:
Chemistry
10th Edition
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
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The standard free energy change for a reaction can be calculated using the equation
ΔG∘′=−nFΔE∘′
where n is the number of electrons transferred, F is Faraday's constant, 96.5 kJ·mol−1·V−1, and ΔE∘′ is the difference in reduction potential.
For each of the given reactions, determine the number of electrons transferred (n) and calculate standard free energy (ΔG∘′) .
Consider the half-reactions and overall reaction for reaction 1.
half-reactions:
fumarate^2− + 2H^+ ↽−−⇀ succinate^2−
CoQH2 ↽−−⇀ CoQ + 2H^+
overall reaction:
fumarate^2− + CoQH2↽−−⇀succinate^2− + CoQ
ΔE∘′= −0.009 V
n=____
ΔG∘′= ____ (kJ⋅mol^−1)
Consider the half-reactions and overall reaction for reaction 2.
half-reactions:
cytochrome (c1) (Fe^2+) ↽−−⇀ cytochrome (c1) (Fe^3+)
cytochrome (c) (Fe^3+) ↽−−⇀ cytochrome (c) (Fe^2+)
overall reaction:
cyt (c1) (Fe^2+)+cyt (c) (Fe^3+)↽−−⇀cyt (c1) (Fe^3+)+cyt (c) (Fe^2+)
ΔE∘′=0.034 V
n= ____
ΔG∘′=____(kJ⋅mol^−1)
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