Chlorinated solvents such as carbon tetrachloride (CCl4) can be degraded in a process called reductive dechlorination where Cl atoms are removed and replaced with H atoms. For example: CCl4 + H+ +2e ⇒ CHCl3 +CI-E⁰=0.67 V In the process of in situ bioremediation an electron donor such as acetate (CH3COO-) is typically added and is oxidized to provide the electrons for the reduction of CCI4. In groundwater devoid of oxygen, nitrate typically serves as the electron acceptor. Answer the questions below using data from Appendix A and that provided above. i) Is it possible that CCl4 could serve as an electron acceptor for acetate? ii) Which electron acceptor, CCl4 or NO3, would be thermodynamically preferred? iii) What do the results in i and ii imply for remediation in an aquifer containing nitrate? (provide a qualitative answer)

Chlorinated solvents such as carbon tetrachloride (CCl4) can be degraded in a process called reductive dechlorination where Cl atoms are removed and replaced with H atoms. For example: CCl4 + H+ +2e ⇒ CHCl3 +CI-E⁰=0.67 V In the process of in situ bioremediation an electron donor such as acetate (CH3COO-) is typically added and is oxidized to provide the electrons for the reduction of CCI4. In groundwater devoid of oxygen, nitrate typically serves as the electron acceptor. Answer the questions below using data from Appendix A and that provided above. i) Is it possible that CCl4 could serve as an electron acceptor for acetate? ii) Which electron acceptor, CCl4 or NO3, would be thermodynamically preferred? iii) What do the results in i and ii imply for remediation in an aquifer containing nitrate? (provide a qualitative answer)

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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