2.1 Preparation of Stock Solutions
The following solutions will be prepared and labeled as A, B, C, and D, corresponding
as described:
Solution A: 50 ml of 1.0 x 10-3 M Fe2+ in 0.1 M HCl
Solution B: 60 ml of 1.0 x 10-3 M o-phen
Solution C: 10 ml of freshly prepared aqueous 1% hydroquinone solution
Solution D: 10 ml of 1 M HCl solution