A cerium(IV) oxidationThe powerful oxidizing agent Ce(IV) can be used to quantitatively determine the concentration ofmethylmalonic acid (MEMA) in a 500 mL beaker.The reaction proceeds as follows:CH;CH(COOH), 6Ce(IV) + 2H,0 - CH;COOH + 6Ce(l) 6H 2CO,14If the initial concentration of CelIV) in the beaker was 0.3M, and 20.0 mL of OSM Fe?* was requiredto back-titrate the excess Ce(IV), what was the concentration of MeMA initially present?A.0 047 MB. 0.28 MC.0.020 MO D.0.023M Reduction Potentials of Metal lon ComplexesMetal ions in a high oxidation state are often found complexed to anions in solution as opposed tobeing "naked" aquo ions.For example, complexation of Ce with the perchlorate anion CIO, shifts the standard reductionpotential of Ce*|Ce3+ from 1.47 to 1.70 V in acidic solution.In marine environments, trace levels of Fe are scavenged by microbially produced catecholatessuch as enterobactin. The (Fe(catecholz complex is calculated to shift the Fe"IFE2" reductionpotential from 0.771 to as low as -2.55 V (see Rizvi et al, Monatsh Chem 2017).What can be said about the interactigns between perchlorate, catecholate and their respectivemetal lons?O A Perchlorate stabilizes Ce and catecholate stabilizes Fe?O B. Perchlorate stabilizes Ce and catecholate stabilizes FeO C. Perchlorate stabilizes Ce* and catecholate stabilizes FeD. Perchlorate stabilizes Ce* and catecholate stabilizes Fe?

If a balanced chemical reaction is known along with all the stoichiometry all the involved reactants…

The powerful oxidizing agent Ce(V) can be used to quantitatively determine the concentration of methylmalonic acid (MEMA) in a 500 mL beaker. The reaction proceeds as follows: CH;CH(COOH)2 + 6Ce(IV)+ 2H,0 CH;COOH + 6Ce() • 6H + 2CO, If the initial concentration of CelIV) in the beaker was 03M, and 20.0 mL of 05 M Fe was required to back-titrate the excess Ce(IV), what was the concentration of MeMA initially present? O A.0047 M O B.0.28 M O C.0.020 M D.0.023 M

The powerful oxidizing agent Ce(V) can be used to quantitatively determine the concentration of methylmalonic acid (MEMA) in a 500 mL beaker. The reaction proceeds as follows: CH;CH(COOH)2 + 6Ce(IV)+ 2H,0 CH;COOH + 6Ce() • 6H + 2CO, If the initial concentration of CelIV) in the beaker was 03M, and 20.0 mL of 05 M Fe was required to back-titrate the excess Ce(IV), what was the concentration of MeMA initially present? O A.0047 M O B.0.28 M O C.0.020 M D.0.023 M

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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