[meenu]

The BP requires Hydrogen Peroxide Mouthwash to contain 5.0 to 7.0% m/v H2O2. 10.0 mL of a sample was diluted to 100.0 mL with water. To 10.0 mL of this diluted solution, 20 mL of 1 M sulphuric acid was added and then titrated with 0.0203 M potassium permanganate solution. 37.63 mL was required to reach the end-point. Given that each mL of 0.02 M KMnO4 is equivalent to 1.701 mg H2O2, calculate the % m/v H2O2 content of the mouthwash sample. Does the sample comply with the BP requirement?