Cyclic voltammetry was used to measure the peak current at several different scan rates for the reversible reaction Sn(IV) → Sn(II) of an organic tin-containing complex. The concentration of the reactant is 4.96 mM and the area of the working electrode is 0.0250 cm². Calculate the diffusion coefficient of the reactant for this two-electron reduction. Scan Rate (V/s) 0.0135 0.0279 0.0538 0.0951 0.149 0.201 0.274 Peak Cathodic Current (μA) 4.12 5.48 7.70 9.87 12.52 14.91 17.59
Cyclic voltammetry was used to measure the peak current at several different scan rates for the reversible reaction Sn(IV) → Sn(II) of an organic tin-containing complex. The concentration of the reactant is 4.96 mM and the area of the working electrode is 0.0250 cm². Calculate the diffusion coefficient of the reactant for this two-electron reduction. Scan Rate (V/s) 0.0135 0.0279 0.0538 0.0951 0.149 0.201 0.274 Peak Cathodic Current (μA) 4.12 5.48 7.70 9.87 12.52 14.91 17.59
Chapter21: Potentiometry
Section: Chapter Questions
Problem 21.11QAP
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Question
![Cyclic voltammetry was used to measure the peak current at
several different scan rates for the reversible reaction
Sn(IV) → Sn(II)
of an organic tin-containing complex. The concentration of
the reactant is 4.96 mM and the area of the working electrode
is 0.0250 cm². Calculate the diffusion coefficient of the
reactant for this two-electron reduction.
D =
1.03 ×10-5
Incorrect
m²/s
Scan Rate
(V/s)
0.0135
0.0279
0.0538
0.0951
0.149
0.201
0.274
Peak Cathodic
Current (μA)
4.12
5.48
7.70
9.87
12.52
14.91
17.59](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6fce482b-d16b-48fd-9d2a-53409a6d3d23%2F9d65106e-8dfc-4ce8-8aa4-a2eddcfc4cf0%2F4hmi9b6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Cyclic voltammetry was used to measure the peak current at
several different scan rates for the reversible reaction
Sn(IV) → Sn(II)
of an organic tin-containing complex. The concentration of
the reactant is 4.96 mM and the area of the working electrode
is 0.0250 cm². Calculate the diffusion coefficient of the
reactant for this two-electron reduction.
D =
1.03 ×10-5
Incorrect
m²/s
Scan Rate
(V/s)
0.0135
0.0279
0.0538
0.0951
0.149
0.201
0.274
Peak Cathodic
Current (μA)
4.12
5.48
7.70
9.87
12.52
14.91
17.59
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