Homework Answers
Option (c) seems correct.
the standard reduction potential for FAD is less negative than for NAD+ (-0.219 vs. -0.315 V). This means that NADH has a more positive oxidation potential (+0.315) and hence is a better reducing agent (will donate more electrons) than FADH2, thus yields more energy when it coughs up its electrons, resulting in greater ATP production.
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Which of the following correctly relates the reducing strength of the pair of molecules? QHz is...
the alid cir- Strength of Oxidizing and Reducing Species 7. Which species in each pair is...
the alid cir- Strength of Oxidizing and Reducing Species 7. Which species in each pair is the better oxidizing agent? a. Bry or H.O, b. SO,'- or MnO,- C. AgBr(s) or Ag d. O, in acidic solution or 0, in basic solution
27 Which of the following molecules has the greatest reduction potential? NADH activated cytochrome (cytc) O...
27 Which of the following molecules has the greatest reduction potential? NADH activated cytochrome (cytc) O activate ubiquinone (QH) O FADH2 O H20
Complete the given reaction which is part of the electron transport chain. The abbreviation Q represents...
Complete the given reaction which is part of the electron transport chain. The abbreviation Q represents coenzyme Q. Use this abbreviation for the product. NADH + H+ + + The reactant that is reduced is In complex III, electrons are transferred from coenzyme Q to cytochrome c, which contains iron. QH, + 2 cyt c(Fe3+) →Q + 2 cyt c(Fe") + 2 H+ Determine the oxidation number for iron on the right side of the reaction arrow. X =
Which one of the following items does not characterize a reducing agent? a. A reducing agent...
Which one of the following items does not characterize a reducing agent? a. A reducing agent loses electrons. b. A reducing agent causes another species to be reduced. c. The oxidation number of a reducing agent increases. d. A good reducing agent is a metal in a high oxidation state, such as Mn7+. e. An example of a good reducing agent is an alkali metal, such as Na.
26. Standard Reduction Potentials The standard reduc- tion potential, E", of any redox pair is defined...
26. Standard Reduction Potentials The standard reduc- tion potential, E", of any redox pair is defined for the half-cell reaction: Oxidizing agent + n electrons – reducing agent The E' values for the NAD+/NADH and pyruvate/lactate con- jugate redox pairs are -0.32 V and -0.19 V, respectively. (a) Which redox pair has the greater tendency to lose electrons? Explain. (b) Which pair is the stronger oxidizing agent? Explain. (C) Beginning with 1 M concentrations of each reactant and product at...
What is the reducing agent (or electron donor) in the following reaction? Pyruvate + NADH +...
What is the reducing agent (or electron donor) in the following reaction? Pyruvate + NADH + H^+ rightarrow Lactate + NAD^+ A. oxygen B. NADH+H^+ C. NAD^+ D. lactate E. pyruvate Reactants capable of interacting to form products in a chemical reaction must first overcome a thermodynamic barrier known as the reaction's A. entropy B. heat content. C. activation energy. D. endothermic level. E. free-energy content. What does the chemiosmotic process in mitochondria involve? A. establishment of a proton gradient...
Please help. I'm not sure how to go about figuring out which species oxidize or reduce...
Please help. I'm not sure how to go about figuring out
which species oxidize or reduce or which are the agents.
2. Complete the table given that the following three reactions occur in the direction as written: a) 2Ag' (aq) + Fe(s) - Fe?' (aq) + 2Ag (s) b) 2Ag (aq) + Cu(s) — Cu (aq) + 2Ag (s) c) Cu (aq) + Fe (s) - Fet (aq) + Cu(s) Reaction Species oxidized Species reduced Oxidizing agent Reducing agent 3....
For which of the following molecules is hydrogen bonding NOT possible? ОА H2O OB. All of...
For which of the following molecules is hydrogen bonding NOT possible? ОА H2O OB. All of these can hydrogen bond OC NH OD OEHF ♡ QUESTION 2 + + HCO31 H20 coz 2 H30* What role is water playing in the acid-base chemical reaction above? O A BASE OB CONJGATE BASE OC.CONJUGATE ACID D. ACID QUESTION 3 At room temperature, water is a liquid while methane is a gas. Which statement compares the intermolecular forces in these molecules correctly? O...
The following reactions use the species above. Determine the oxidizing agent and the reducing agent, and which atom...
The following reactions use the species above. Determine the oxidizing agent and the reducing agent, and which atom is oxidized or reduced for each reaction C2H4 + 3 O2 → 2 CO2 + 2 H2O Atom oxidized: Oxidizing agent: Atom reduced: Reducing agent: CuO + H2 → Cu + H2O Atom oxidized: Oxidizing agent: Atom reduced: Reducing agent: Cu + 4HNO3 → Cu(NO3)2 + 2 NO2 + 2 H20 Atom oxidized: Oxidizing agent: Atom reduced: Reducing agent:
Q4. Identify who is oxidized and who is reduced in following reactions. [2+2+2-6pts] CH4 + 202...
Q4. Identify who is oxidized and who is reduced in following reactions. [2+2+2-6pts] CH4 + 202 - CO2 + Energy + 2 H2O Na + ci — Nat + cr Energy + 6C0, + 6H,0 C,H,06 + 60, Bonus: Circle oxidizing agent in each reaction above Q5. Label correctly the names of different processes that generate ATP as shown below (substrate-level or oxidative phosphorylation?). [3pts] Oxidation of Organic Fuel Molecules During Cellular Respiration Electrons carried via NADH Electrons carried Via...
the alid cir- Strength of Oxidizing and Reducing Species 7. Which species in each pair is the better oxidizing agent? a. Bry or H.O, b. SO,'- or MnO,- C. AgBr(s) or Ag d. O, in acidic solution or 0, in basic solution
27 Which of the following molecules has the greatest reduction potential? NADH activated cytochrome (cytc) O activate ubiquinone (QH) O FADH2 O H20
Complete the given reaction which is part of the electron transport chain. The abbreviation Q represents coenzyme Q. Use this abbreviation for the product. NADH + H+ + + The reactant that is reduced is In complex III, electrons are transferred from coenzyme Q to cytochrome c, which contains iron. QH, + 2 cyt c(Fe3+) →Q + 2 cyt c(Fe") + 2 H+ Determine the oxidation number for iron on the right side of the reaction arrow. X =
26. Standard Reduction Potentials The standard reduc- tion potential, E", of any redox pair is defined for the half-cell reaction: Oxidizing agent + n electrons – reducing agent The E' values for the NAD+/NADH and pyruvate/lactate con- jugate redox pairs are -0.32 V and -0.19 V, respectively. (a) Which redox pair has the greater tendency to lose electrons? Explain. (b) Which pair is the stronger oxidizing agent? Explain. (C) Beginning with 1 M concentrations of each reactant and product at...
What is the reducing agent (or electron donor) in the following reaction? Pyruvate + NADH + H^+ rightarrow Lactate + NAD^+ A. oxygen B. NADH+H^+ C. NAD^+ D. lactate E. pyruvate Reactants capable of interacting to form products in a chemical reaction must first overcome a thermodynamic barrier known as the reaction's A. entropy B. heat content. C. activation energy. D. endothermic level. E. free-energy content. What does the chemiosmotic process in mitochondria involve? A. establishment of a proton gradient...
Please help. I'm not sure how to go about figuring out
which species oxidize or reduce or which are the agents.
2. Complete the table given that the following three reactions occur in the direction as written: a) 2Ag' (aq) + Fe(s) - Fe?' (aq) + 2Ag (s) b) 2Ag (aq) + Cu(s) — Cu (aq) + 2Ag (s) c) Cu (aq) + Fe (s) - Fet (aq) + Cu(s) Reaction Species oxidized Species reduced Oxidizing agent Reducing agent 3....
For which of the following molecules is hydrogen bonding NOT possible? ОА H2O OB. All of these can hydrogen bond OC NH OD OEHF ♡ QUESTION 2 + + HCO31 H20 coz 2 H30* What role is water playing in the acid-base chemical reaction above? O A BASE OB CONJGATE BASE OC.CONJUGATE ACID D. ACID QUESTION 3 At room temperature, water is a liquid while methane is a gas. Which statement compares the intermolecular forces in these molecules correctly? O...
The following reactions use the species above. Determine the oxidizing agent and the reducing agent, and which atom is oxidized or reduced for each reaction C2H4 + 3 O2 → 2 CO2 + 2 H2O Atom oxidized: Oxidizing agent: Atom reduced: Reducing agent: CuO + H2 → Cu + H2O Atom oxidized: Oxidizing agent: Atom reduced: Reducing agent: Cu + 4HNO3 → Cu(NO3)2 + 2 NO2 + 2 H20 Atom oxidized: Oxidizing agent: Atom reduced: Reducing agent:
Q4. Identify who is oxidized and who is reduced in following reactions. [2+2+2-6pts] CH4 + 202 - CO2 + Energy + 2 H2O Na + ci — Nat + cr Energy + 6C0, + 6H,0 C,H,06 + 60, Bonus: Circle oxidizing agent in each reaction above Q5. Label correctly the names of different processes that generate ATP as shown below (substrate-level or oxidative phosphorylation?). [3pts] Oxidation of Organic Fuel Molecules During Cellular Respiration Electrons carried via NADH Electrons carried Via...
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