Below are the paired reduction reactions for chemolithotrophic denitrification: these organisms are using nitrate as an...
Below are the paired reduction reactions for chemolithotrophic denitrification: these organisms are using nitrate as an electron accepter and are using hydrogen gas as a source of energy and electrons.
2NO3- + 10e- -> N2 (+0.74 volts)
2H+ + 2e- -> H2 (-0.42 volts)
Using the information given, calculate the ΔE for this reaction, balance the full reaction to determine n, the number of electrons transfered when 97 molecules of H2 are oxidized. Finally, use the simplified Nernst Equation
ΔG = -nFΔE, where F = 96.48 kJ (mol e-)
to determine the Gibbs Free energy available to do work!
- Report your answer in kJ per mole rounded to two decimal places.
- Report only the numeric portion
of your answer
- e.g. 1.01, not 1.01 kj per mole.
- Answers should ALWAYS be negative since this is a spontaneous reaction.
Homework Answers
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Below are the paired
reduction reactions for chemolithotrophic denitrification: these
organisms are using nitrate as an...
Below are the paired reduction reactions for chemolithotrophic denitrification: theseorganisms are using nitrate as an electron...
Below are the paired reduction reactions for chemolithotrophic denitrification: theseorganisms are using nitrate as an electron accepter and are using hydrogen gas as a source of energy and electrons. 2NO3- + 10e- -> N2 (+0.74 volts) 2H+ + 2e- -> H2 (-0.42 volts) Using the information given, calculate the ΔE for this reaction, balance the full reaction to determine n, the number of electrons transfered when 53 molecules of H2 are oxidized. Finally, use the simplified Nernst Equation ΔG =...
Below are the reduction half reactions for chemolithoautotrophic nitrification, where ammonia is a source of electrons...
Below are the reduction half reactions for chemolithoautotrophic nitrification, where ammonia is a source of electrons and energy and oxygen is the terminal electron acceptor. NO2- + 6e- -> NH4+ (-0.41 volts) O2 + 4e- -> 2H2O (+0.82 volts) Using the information given, calculate the ΔE for this reaction, balance the full reaction to determine the n, the number of electrons transfered when 3 molecules of NH4+ are oxidized. Finally, use the simplified Nernst Equation ΔG = -nFΔE, where F...
1. What is the redox state of Oxygen in a molecule of diatomic hydrogen gas (H2)?...
1. What is the redox state of Oxygen in a molecule of diatomic hydrogen gas (H2)? 2. NO2- + 6e- -> NH4+ (-0.41 volts) & O2 + 4e- -> 2H2O (+0.82 volts) If you balance and combine the reactions so that 52 molecules of NH4+ are oxidized to NO2-, how many molecules of O2 will be reduced to H2O? 3. NO3- + 10e- -> N2 (E0 = +0.74 V) & H+ + 2e- -> H2 (E0 = -0.42 V) If...
Below are the reduction half reactions for chemolithoautotrophic denitrification, where hydrogen is a source of electrons...
Below are the reduction half reactions for chemolithoautotrophic denitrification, where hydrogen is a source of electrons and energy and nitrate is the terminal electron acceptor. NO3- + 10e- -> N2 (E0 = +0.74 V) H+ + 2e- -> H2 (E0 = -0.42 V) If you balance and combine the reactions so that 155 molecules of H2 gas are oxidized to H+, how many molecules of NO3- will be reduced to dinitrogen gas?
Below are the reduction half reactions for chemolithoautotrophic denitrification, where hydrogen is a source of electrons...
Below are the reduction half reactions for chemolithoautotrophic denitrification, where hydrogen is a source of electrons and energy and nitrate is the terminal electron acceptor. NO3- + 10e- -> N2 (E0 = +0.74 V) H+ + 2e- -> H2 (E0 = -0.42 V) If you balance and combine the reactions so that 220 molecules of H2 gas are oxidized to H+, how many molecules of NO3- will be reduced to dinitrogen gas?
(a) Choose all of the statements from below which correctly describe issues pertaining to the relationship between the e...
(a) Choose all of the statements from below which
correctly describe issues pertaining to the
relationship between the emf of a reaction and its Gibbs free
energy change.
The Gibbs free energy change and emf values of a reaction have
opposite algebraic signs (+ vs. -).
A Gibbs free energy change involves moles of substances whereas an
emf involves coulombs of electrons.
The Gibbs free energy change and emf values of a reaction have the
same algebraic signs (+ or...
Using the table of reduction potentials (Eo) for the half-reactions shown, match the given redox reactions...
Using the table of reduction potentials (Eo) for the half-reactions shown, match the given redox reactions with their Eo and predict the change in free energy by stating whether the reactions will be exergonic or endergonic Exergonic 1.14 V 1.00 V 0.15 V 1.24 V 1.24 V Endergonic Reaction Free Energy Eo (Volts) CO2/glucose [-0.43] -0.5 -0.4 NAD /NADH 0.32 -0.3 NADH H 12 OH.ONAD 2HH2 -0.42] CO2/methanol [-0.38] Co2/acetate [-0.28] FADFADH2[-0.18] Pyruvatelactate [-0.19] 6CO, + 6H,O → 60, +...
Standard Reduction Please write your answers here Reduction Half-Reactin Potential (V) F2(g) + 2e-→ 2F-(aq) S2082 (ag) +2e-2SO42(ag) O2(g) + 4H(a)+ 4e 2H200) +2.87 +2.01 +1.23 +1.09 +0.80 +0.77 +0.54...
Standard Reduction Please write your answers here Reduction Half-Reactin Potential (V) F2(g) + 2e-→ 2F-(aq) S2082 (ag) +2e-2SO42(ag) O2(g) + 4H(a)+ 4e 2H200) +2.87 +2.01 +1.23 +1.09 +0.80 +0.77 +0.54 +0.34 +0.15 +0.14 0.00 0.14 0.26 0.44 0.74 0.76 0.83 1.18 2.71 3.04 2 4 Ag+(aq) + e-→ Ag(s) Fe3+(ag)eFe2*(aq) 20)+ 2e- 21(aq) Cu2(ag)+ 2e Cus) SAMPLE QUIZ 4 S(s) + 2H+(aq) + 2e. → H2S(g) 2H(a)+ 2eH2g) Sn2(ag) 2e Sng) 1. What is the purpose of the salt bridge...
Part 1.) Choose all of the statements from below which correctly describe issues pertaining to the...
Part 1.)
Choose all of the statements from below which
correctly describe issues pertaining to the
relationship between the emf of a reaction and its Gibbs free
energy change.
1. The Gibbs free energy change and emf values of a reaction
have opposite algebraic signs (+ vs. -).
2. A mole of particles is more particles than a coulomb of
particles.
3. A spontaneous reaction has a positive Gibbs free energy change
and a negative emf.
4. A Gibbs free...
(a) Choose all of the statements from below which
correctly describe issues pertaining to the
relationship between the emf of a reaction and its Gibbs free
energy change.
The Gibbs free energy change and emf values of a reaction have
opposite algebraic signs (+ vs. -).
A Gibbs free energy change involves moles of substances whereas an
emf involves coulombs of electrons.
The Gibbs free energy change and emf values of a reaction have the
same algebraic signs (+ or...
Using the table of reduction potentials (Eo) for the half-reactions shown, match the given redox reactions with their Eo and predict the change in free energy by stating whether the reactions will be exergonic or endergonic Exergonic 1.14 V 1.00 V 0.15 V 1.24 V 1.24 V Endergonic Reaction Free Energy Eo (Volts) CO2/glucose [-0.43] -0.5 -0.4 NAD /NADH 0.32 -0.3 NADH H 12 OH.ONAD 2HH2 -0.42] CO2/methanol [-0.38] Co2/acetate [-0.28] FADFADH2[-0.18] Pyruvatelactate [-0.19] 6CO, + 6H,O → 60, +...
Standard Reduction Please write your answers here Reduction Half-Reactin Potential (V) F2(g) + 2e-→ 2F-(aq) S2082 (ag) +2e-2SO42(ag) O2(g) + 4H(a)+ 4e 2H200) +2.87 +2.01 +1.23 +1.09 +0.80 +0.77 +0.54 +0.34 +0.15 +0.14 0.00 0.14 0.26 0.44 0.74 0.76 0.83 1.18 2.71 3.04 2 4 Ag+(aq) + e-→ Ag(s) Fe3+(ag)eFe2*(aq) 20)+ 2e- 21(aq) Cu2(ag)+ 2e Cus) SAMPLE QUIZ 4 S(s) + 2H+(aq) + 2e. → H2S(g) 2H(a)+ 2eH2g) Sn2(ag) 2e Sng) 1. What is the purpose of the salt bridge...
Part 1.)
Choose all of the statements from below which
correctly describe issues pertaining to the
relationship between the emf of a reaction and its Gibbs free
energy change.
1. The Gibbs free energy change and emf values of a reaction
have opposite algebraic signs (+ vs. -).
2. A mole of particles is more particles than a coulomb of
particles.
3. A spontaneous reaction has a positive Gibbs free energy change
and a negative emf.
4. A Gibbs free...
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