User:Hannah Harvey/Notebook/CHEM-471 Fall 2016/2017/02/07

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To try and minimize the voltage between peaks.


  • CH Instruments Electrochemical Analyzer was used.
  1. 5 mM hexaammineruthenium(III) chloride and 0.1 M KCl solution was used in electrochemical cell.
  2. The glassy carbon electrode was cleaned with 0.3 and then 0.05 alumina slurry and then sonicated.
  3. The reference electrode, the platinum wire, and the GCE were attached to the instrument.
  4. The parameters were set at:
  • Initial: 0.2
  • High: 0.2
  • Low: -0.4
  • Initial Scan: Negative
  • Scan Rate: 0.05
  • Segments: 4
  • Sensitivity 1x10^(-5)
  • Sample Interval: 0.001
  1. Then the instrument was ran.
  2. This protocol was then repeated but with a hexaammineruthenium(III) chloride and 1M KCl solution.


  • .1M KCl

Figure 1 dV=0.123V dC=9.54*10-5A

  • 1M KCl

Figure 2 dV=0.069V dC=1.00*10-4A


  • 0.1 M KCl solution had too high a separation between peaks value so 1 M KCl solution was used instead, which had an appropriate separation between peaks.


Cassidy Hart