Given the standard reduction potentials (Eo ’) for ubiquinone (Q) Q + 2H+ + 2e- ---> QH2 E o ’ = 0.04 V FMN + 2H+ + 2e- ---> FMNH2 E o ’ = -0.22 V Calculate the standard ΔEo ’ for the oxidation of FMNH2 by Q. From the reactants in your derived redox reaction, indicate the oxidant and reductant. Then calculate the standard free energy of the redox reaction and indicate if the reaction is exergonic or endergonic

Given the standard reduction potentials (Eo ’) for ubiquinone (Q) Q + 2H+ + 2e- ---> QH2 E o ’ = 0.04 V FMN + 2H+ + 2e- ---> FMNH2 E o ’ = -0.22 V Calculate the standard ΔEo ’ for the oxidation of FMNH2 by Q. From the reactants in your derived redox reaction, indicate the oxidant and reductant. Then calculate the standard free energy of the redox reaction and indicate if the reaction is exergonic or endergonic

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

Chapter18: Electrochemistry

Section: Chapter Questions

Problem 3RQ: Table 17-1 lists common half-reactions along with the standard reduction potential associated with...

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Question

Given the standard reduction potentials (Eo ’) for ubiquinone (Q)

Q + 2H+ + 2e- ---> QH2 E o ’ = 0.04 V

FMN + 2H+ + 2e- ---> FMNH2 E o ’ = -0.22 V

Calculate the standard ΔEo ’ for the oxidation of FMNH2 by Q. From the reactants in your derived redox reaction, indicate the oxidant and reductant. Then calculate the standard free energy of the redox reaction and indicate if the reaction is exergonic or endergonic.

Definition Definition Chemical reactions involving both oxidation and reduction processes. During a redox reaction, electron transfer takes place in such a way that one chemical compound gets reduced and the other gets oxidized.

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