If the E 0.023 V versus. S.CE, what is the cell potential versus a Ag ABCI?ell-0.266O b. 0.415C.0.266 VO d.-0415 VO e -0.021The most widely used potassium selective membrane electrode employs the antibiotic valinomycin as an ionophore within a thin polymericmembrane at the distal end of the electrode. The presence of valinomycin enables the organic membrane to exhibit a voltage (EMF) that ishighly dependent on the potassium activity in the sample, with relatively little interference from other common cations. The function of thevalinomycin in this system is to:Select one:O a. Sequester/bind all other cations present in the sample thus allowing only potassium to enter the membraneO b. Selectively binds potassium to form a valinomycin/potassium complexwithin the membrane phaseOc. Serves as an anionic site within the membrane to neutralize the charge of potassiumO d. Selectively binds sodium and other group I metals to form a valinomycin/metal complex within the membrane phaseO e. None of the aboveENG )21100HUAWEI P9PlusLEICA DUAL CAMERA

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If the Eell =0.023 V versus. S.C.E., what is the cell potential versus a Ag|AGCI? O a. -0.266 O b. 0.415 Oc 0.266V O d. -0.415 V O e. -0.021

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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Question

If the E 0.023 V versus. S.CE, what is the cell potential versus a Ag ABCI?
ell
-0.266
O b. 0.415
C.
0.266 V
O d.-0415 V
O e -0.021
The most widely used potassium selective membrane electrode employs the antibiotic valinomycin as an ionophore within a thin polymeric
membrane at the distal end of the electrode. The presence of valinomycin enables the organic membrane to exhibit a voltage (EMF) that is
highly dependent on the potassium activity in the sample, with relatively little interference from other common cations. The function of the
valinomycin in this system is to:
Select one:
O a. Sequester/bind all other cations present in the sample thus allowing only potassium to enter the membrane
O b. Selectively binds potassium to form a valinomycin/potassium complexwithin the membrane phase
Oc. Serves as an anionic site within the membrane to neutralize the charge of potassium
O d. Selectively binds sodium and other group I metals to form a valinomycin/metal complex within the membrane phase
O e. None of the above
ENG )
211
00
HUAWEI P9Plus
LEICA DUAL CAMERA

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