Students in AP Chemistry with Ms. Caveny are studying oxidation-reduction reactions. They recently performed a titration lab to determine the concentration of hydrogen peroxide in commercially available bottles. Students acidified their hydrogen peroxide solution by adding sulfuric acid, and potassium permanganate was slowly titrated into the solution. Once the equivalence point was reached, the solution went from being clear to a pale pink. | Hillsboro High School, Hillsboro, IL