11. Suppose an obligate aerobic chemolithotroph was able to use any of the potential energy sources listed in the table below as asource of electrons. Which energy source (i.e., electron donor: I want the molecule not the redox couple) would provide thegreatest amount of free energy? (Note: all the redox couples listed are two electron transfers). Explain your answer – MATHworks well for this.Redox CouplePo-0.422H H2+0.42NO, NO,%0H0+0.82s'H,Sso, s0,"-0.282-2-+0.0212. Consider a redox reaction involving the redox couples S/H2S and NO3/NO, in the above table.(a) Which molecule (I want the molecule, not the redox couple) would be the electron acceptor? Why? Use the table above tohelp answer this question.(b) (Suppose a chemoorganotroph could acquire electrons from H2 using either oxygen or nitrate (NO3) as the terminalelectron acceptor. Per two electrons transferred, determine if the use of nitrate or oxygen will yield more energy? You mustshow how you arrived at this by showing your work in order to receive full credit for your answer. It's all in the math!Option (A): H2 +½ O2 = H2OOption (B): H2 + NO3¯=NO2¯ +H2O

The relation between standard potential and free energy is shown below. ∆G∘=-nFE∘

11. Suppose an obligate aerobic chemolithotroph was able to use any of the potential energy sources listed in the table below as a source of electrons. Which energy source (i.e., electron donor: I want the molecule not the redox couple) would provide the greatest amount of free energy? (Note: all the redox couples listed are two electron transfers). Explain your answer – MATH works well for this. Redox Couple 2H H, -0.42 +0.42 NO, NO, +0.82 s'ms -0.28 S'H,S 2- +0.02 6.

11. Suppose an obligate aerobic chemolithotroph was able to use any of the potential energy sources listed in the table below as a source of electrons. Which energy source (i.e., electron donor: I want the molecule not the redox couple) would provide the greatest amount of free energy? (Note: all the redox couples listed are two electron transfers). Explain your answer – MATH works well for this. Redox Couple 2H H, -0.42 +0.42 NO, NO, +0.82 s'ms -0.28 S'H,S 2- +0.02 6.

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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