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Below are two half-reactions describing the oxidation/reduction part of the reaction catalyzed by malic enzyme. Pyruvate + CO₂ + H+ + 2e →Malate (E = -0.33 V) NADP+ + 2H+ + 2e → NADPH + H (E = -0.32 V) A student was instructed to combine the half-reactions above into a single redox reaction written to show the spontaneous directi electron transfer. The student produced the following reaction as his answer. Pyruvate + CO₂ + 2e + NADPH+H*→Malate + NADP+ What errors has the student made in writing the reaction? Choose one or more: O A. The NADP+/NADPH and pyruvate/malate conjugate redox pairs are not placed with an oxidant and reductant on each side of the reaction. B. The reaction is not written to show the spontaneous direction of electron flow. C. Electrons should not be included in a balanced redox reaction. D. The electrons are not balanced in the equation.

Below are two half-reactions describing the oxidation/reduction part of the reaction catalyzed by malic enzyme. Pyruvate + CO₂ + H+ + 2e →Malate (E = -0.33 V) NADP+ + 2H+ + 2e → NADPH + H (E = -0.32 V) A student was instructed to combine the half-reactions above into a single redox reaction written to show the spontaneous directi electron transfer. The student produced the following reaction as his answer. Pyruvate + CO₂ + 2e + NADPH+H*→Malate + NADP+ What errors has the student made in writing the reaction? Choose one or more: O A. The NADP+/NADPH and pyruvate/malate conjugate redox pairs are not placed with an oxidant and reductant on each side of the reaction. B. The reaction is not written to show the spontaneous direction of electron flow. C. Electrons should not be included in a balanced redox reaction. D. The electrons are not balanced in the equation.

Chemistry
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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Below are two half-reactions describing the oxidation/reduction part of the reaction catalyzed by malic enzyme. Pyruvate + CO2 + H+ + 2e → Malate (E = -0.33 V) NADP+ + 2H+ + 2e → NADPH + H+ (E = -0.32 V) A student was instructed to combine the half-reactions above into a single redox reaction written to show the spontaneous direction of electron transfer. The student produced the following reaction as his answer. Pyruvate + CO2 + 2e + NADPH + H+. Malate + NADP+ What errors has the student made in writing the reaction? Choose one or more: O A. The NADP+/NADPH and pyruvate/malate conjugate redox pairs are not placed with an oxidant and reductant on each side of the reaction. B. The reaction is not written to show the spontaneous direction of electron flow. ✔ C. Electrons should not be included in a balanced redox reaction. D. The electrons are not balanced in the equation.
Transcribed Image Text:Below are two half-reactions describing the oxidation/reduction part of the reaction catalyzed by malic enzyme. Pyruvate + CO2 + H+ + 2e → Malate (E = -0.33 V) NADP+ + 2H+ + 2e → NADPH + H+ (E = -0.32 V) A student was instructed to combine the half-reactions above into a single redox reaction written to show the spontaneous direction of electron transfer. The student produced the following reaction as his answer. Pyruvate + CO2 + 2e + NADPH + H+. Malate + NADP+ What errors has the student made in writing the reaction? Choose one or more: O A. The NADP+/NADPH and pyruvate/malate conjugate redox pairs are not placed with an oxidant and reductant on each side of the reaction. B. The reaction is not written to show the spontaneous direction of electron flow. ✔ C. Electrons should not be included in a balanced redox reaction. D. The electrons are not balanced in the equation.
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