Homework Problem Set Electrochemical analysis 1.(5) Calculate the molar ratio of Cut to Cu2+ in a solution into which a platinum indicator electrode and a saturated calomel electrode are dipped at 25°C if the cell potential is 0.000 V. 2.(5) Anodic stripping voltammetry at a platinum disk electrode was used to assay a water sample for Cu2+. The potential was adjusted to -1.3 V (versus SCE) for 5 min prior to scanning anodically at 50 mV/s. The height of the stripping peak was recorded for a series of standard solutions and the sample. Determine the concentration of Cu2+ in the sample solution. [Cu2+], x 10-5 M ip. HA 1.00 1.20 2.00 2.37 4.00 4.82 6.00 7.27 8.00 9.67 10.00 12.14 Sample 5.36 3.(10) Potassium ferrocyanide (n-1) has a diffusion coefficient of 6.5 x 10-6 cm²/s during its oxidation in 0.1 M KCl. It was used to measure the area of a stationary disk electrode. At a scan rate of 100 mV/s the anodic peak current for the oxidation of 1.0 mM solution of potassium ferrocyanide was 32 μA. Estimate the electrode area.