An organic compound produced the CV labeled A in an aqueous phosphate buffer on a glassy carbon electrode after polishing the electrode and cleaning it in a sonicating bath with deionized water. Curve B was the CV taken of the same solution on the same electrode after polishing, rinsing in the sonicating bath and electrochemically pretreating the electrode with five cycles of one minute at \(+1.3 \mathrm{~V}\) followed by one minute at \(-1.3 \mathrm{~V}\). Give two plausible explanations for the difference in the appearance of the two curves and describe an experiment that could discriminate between these two hypotheses.

Transcribed Image Text:

B A Eapplied