Sample Step By Step Procedure: 

***This procedure is written based on some given circumstances outlined in the Calculations page. You should read the pre-lab portion of the calculations to get a better understanding of where we are getting this procedure. 

1) Obtain ~50 mL of the KMnO4 solution in a beaker. 

2) Set up a clean 50 mL buret in a clamp or support stand. 

3) Rinse the buret with distilled water first, and then rinse twice with the KMnO4 solution. 

4) Close the stopcock and fill with KMnO4 solution to slightly above the zero mark. Open the stopcock to allow any air bubbles to escape. Record the new reading on the buret for your initial volume of KMnO4 solution. 

5) Measure 2 mL of the given H2O2 solution and pour into a 150 mL Erlenmeyer flask. Make sure that ALL of the solution makes it into the flask. 

*Again, refer to Calculations page to find sample calculations for these values. 

6) Add 1 mL 3M H2SO4 to the H2O2

7) Position the flask below the buret tip, making sure that the tip is not touching the sides of the flask. 

8) Titrate the H2O2 solution until a faint pink color persists in the solution. Record the new volume reading in the buret. 

9) Repeat the titration once more. 

*Make sure all KMnO4 waste is placed into the correct waste container! 

Demonstration Video: 

The video below shows AP chemistry students performing the hydrogen peroxide titration. This can give you a good idea of what the titration will look like when performed, and he shows some calculations at the end of the video. 

(All credit to Mr. Hayek and his students for the demonstration!)