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Titration/analysis for determination of hydrogen peroxide concentration
October 24, 2012
Q. I need the procedure of titration to analyse the concentration of hydrogen peroxide in my sample.
- Panali, Goa, India
A. Sir:
If there is nothing else present in your hydrogen peroxide solution, then the density of the solution can be used to find the concentration. For example, a density of about 13 degrees baumé equals about 35% H2O2. A density table and hydrogen peroxide concentration can be found in the Chemistry Physics handbook or likely on the internet.
Regards,
Galvanizing Consultant - Hot Springs, South Dakota, USA
A. The usual method of analysis is by titration with potassium permanganate in dilute sulphuric acid medium.
The peroxide reduces (decolorises) the pink color of the permanganate and you titrate till there is a permanent slight pink colour.
To find a factor it would be best to make up a standard solution of peroxide in roughly the same concentration as your unknown sample.
It can also be analysed iodometrically, and colormetrically.
Geoffrey Whitelaw
- Port Melbourne, Australia
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