Nanyang Technological University

CHEM 3062

CM3062 EXPERIMENT 5: CYCLIC VOLTAMMETRY
Name:Lee Zhong Ying Matric #:U1940375L Clean up / 20
Date: 23/9/2021 Group #:LA1, Grp B
Date handed in: 28/9/2021 Day: Thu
Examiner: Dr. R. D. Webster Grade A B C D F
1. Cyclic Voltammetry of Dopamine (DA) in 1.0 M Sulfuric Acid.
Mass (DA) = ___14__mg Concentration (DA) = ____1.83 x 10-3_(3sf)_mol L-1
pH of solution = ____1.00____ Er½ (DA) = _____0.536 (3sf)_____V
Scan Rate GC Electrode
V s-1 Epox / V Epred / V Epox - Epred
0.05 0.674 0.397 0.277
0.075 0.617 0.5 0.117
0.100 0.627 0.48 0.147
0.125 0.645 0.444 0.201
0.150 0.667 0.409 0.258
0.175 0.663 0.417 0.246
0.200 0.684 0.391 0.293
0.225 0.665 0.411 0.254
0.250 0.672 0.405 0.267
0.275 0.633 0.466 0.167
0.3 0.647 0.442 0.205
0.4 0.645 0.442 0.203
0.5 0.659 0.419 0.24
0.6 0.647 0.436 0.211
0.7 0.692 0.379