Quinone undergoes a reversible reduction at a voltammetric working electrode. The reaction is (a)…

Quinone undergoes a reversible reduction at a voltammetric
working electrode. The reaction is

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(a) Assume that the diffusion coefficients for quinone and
hydroquinone are approximately the same and calculate the approximate half-wave
potential (versus SCE) for the reduction of hydroquinone at an RDE from a
solution buffered to a pH of 8.0.

(b) Repeat the calculation in (a) for a solution buffered to
a pH of 5.0.

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