Peak current (Ip) and scan rate (I p ) are listed for cyclic voltammetry (Fe(II) Fe(III))
Question:
Peak current (Ip) and scan rate (Ip) are listed for cyclic voltammetry (Fe(II) → Fe(III)) of a water-soluble ferrocene derivative in 0.1 M NaCl.
If a graph of Ip versus √v gives a straight line, then the reaction is diffusion controlled. Prepare such a graph and use it to find the diffusion coefficient of the reactant for this one-electron oxidation. The area of the working electrode is 0.020 1 cm2, and the concentration of reactant is 1.00 mM.
Transcribed Image Text:
Scan rate (V/s) Peak anodic current ( HA) NCH ) 0.019 2 2.18 3.46 4.17 5.66 6.54 7.55 PF 0.048 9 60.075 1 Fe 0.125 0.175 0.251
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