question archive While investigating a new electrochemical reaction, junior electrochemist obtained a set of cyclic voltammograms (see graph)

While investigating a new electrochemical reaction, junior electrochemist obtained a set of cyclic voltammograms (see graph)

Subject:ChemistryPrice: Bought3

While investigating a new electrochemical reaction, junior electrochemist obtained a

set of cyclic voltammograms (see graph). Please help your colleague to

analyze obtained results and determine the standard rate constant for the reaction. It is

known that this is a one-electron process with the transfer coefficient α = 0.5. Other

experimental conditions were the following: electrode surface area 0.02 cm 2 , temperature

298 K, bulk concentration of the species 1 mM (product of the reaction is initially

absent). Assume the diffusion coefficient of the species 1×10 -5 cm 2 /s.

(b) Explain the observed dependence of the peak potentials and currents on the scan rate.

 

pur-new-sol

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