47. The figure shows a steady-state microelectrode voltammogram of a neurotransmitter obtained in a solution of 0.1 M KCl at 10 mV/s. Which best describes this voltammogram? Current, i (NA) 20 1.0 0.5 G.D 43 01 00 01 02 03 04 05 Potential, E (V) vs. Ag/AgCl (A) A scan-rate dependent oxidation wave with a cathodic limiting current of 2.0 nA and a standard oxidation potential of 0.20 V vs Ag/AgCl. (B) A scan-rate independent reduction wave with a cathodic limiting current of 2.0 nA and a standard reduction potential of 0.40 V vs Ag/AgCl. (C) A scan-rate independent oxidation wave with an anodic limiting current of 2.0 nA and a standard reduction potential of 0.20 V vs Ag/AgCl. (D) An irreversible scan-rate dependent oxidation wave with an anodic limiting current of 0.0 nA and unable

47. The figure shows a steady-state microelectrode voltammogram of a neurotransmitter obtained in a solution of 0.1 M KCl at 10 mV/s. Which best describes this voltammogram? Current, i (NA) 20 1.0 0.5 G.D 43 01 00 01 02 03 04 05 Potential, E (V) vs. Ag/AgCl (A) A scan-rate dependent oxidation wave with a cathodic limiting current of 2.0 nA and a standard oxidation potential of 0.20 V vs Ag/AgCl. (B) A scan-rate independent reduction wave with a cathodic limiting current of 2.0 nA and a standard reduction potential of 0.40 V vs Ag/AgCl. (C) A scan-rate independent oxidation wave with an anodic limiting current of 2.0 nA and a standard reduction potential of 0.20 V vs Ag/AgCl. (D) An irreversible scan-rate dependent oxidation wave with an anodic limiting current of 0.0 nA and unable

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

47. The figure shows a
steady-state
microelectrode
voltammogram of a
neurotransmitter
obtained in a solution
of 0.1 M KCl at 10
mV/s. Which best
describes this
voltammogram?
Current, i (A)
20
1.5
1.0
0.5
G.D
43 01 00 01 02 03 04 05
Potential, E (V) vs. Ag/AgCl
(A) A scan-rate dependent oxidation wave with a
cathodic limiting current of 2.0 nA and a standard
oxidation potential of 0.20 V vs Ag/AgCl.
(B) A scan-rate independent reduction wave with a
cathodic limiting current of 2.0 nA and a standard
reduction potential of 0.40 V vs Ag/AgCl.
(C) A scan-rate independent oxidation wave with an
anodic limiting current of 2.0 nA and a standard
reduction potential of 0.20 V vs Ag/AgCl.
(D) An irreversible scan-rate dependent oxidation wave
with an anodic limiting current of 0.0 nA and unable
to obtain its standard reduction potential with the
information provided
(D) The oxidized species formed in the reaction produce
an insulating layer on the electrode surface.
50. Anodic stripping voltammetry of Li in a Hg nanodroplet
was used for quantifying the amount of Li* that a 10 um
microparticle for a Li-ion battery electrode could store.
The volume of the particle was 1 pl. and the stripping
voltammogram was obtained at 100 mV/s following Li
pre-concentration. The charge for the stripping peak was
85 nC. What was the concentration of Li' in the particle?
200 mV
$ 8
Current, i (A)
-12
(A) 0.88 µM
(C) 1.76 M
-1.6
-1.8
-1.4
Potential, E (V) vs. Cd(Hg)/Cd²+
(B) 0.88 M
(D) 176 M
-2.0
-22

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