Featured in PASCO’s College Chemistry Instructor Guide
College Instructor edition with 36 experiments covering introductory and general chemistry topics.
Use an oxidation reduction potential electrode and drop counter to determine the concentration of a commercial, nominally 3% hydrogen peroxide solution, measuring the change in potential during an oxidation-reduction reaction.
Students use the change in potential during an oxidation-reduction reaction to determine the concentration of a commercial, nominally 3% hydrogen peroxide solution.
Students gain experience conducting the following procedures:
Magnetic stirrer and stir bar
Beaker, 150-mL - 2
Volumetric pipet, 10-mL
Graduated cylinder, 50-mL
Hydrogen peroxide, ~ 3%, 1:20 dilution - 40 mL
1.000 × 10–2 M Potassium permanganate (KMnO4) - 100 mL
4 M Sulfuric acid (H2SO4) - 70 mL
Water, deionized - 250 mL
Wash bottle with deionized water
This experiment may require software and an interface for data collection.