Sciencemadness Discussion Board

quantitative measurement of oxidant

jwarr - 12-7-2011 at 17:06

Whats the most accessible way to quantitatively measure the amount of oxidant (either H2O2 or CH3CO3H, or sodium percarbonate) in a solution?

[Edited on 13-7-2011 by jwarr]

Magpie - 12-7-2011 at 17:29

Just offhand I would think that titrating with a standard sodium thiosulfate solution would be the easiest.

Lambda-Eyde - 13-7-2011 at 03:59

I think I've seen a procedure for determining concentration of hydrogen peroxide with standardized potassium permanganate. But isn't there a risk that Mn<sup>2+</sup> could catalyze decomposition of the H<sub>2</sub>O<sub>2</sub>?

jwarr - 13-7-2011 at 06:50

Magpie, is there any way to visualize the endpoint without starch and iodine?

Magpie - 13-7-2011 at 08:59

Quote: Originally posted by jwarr  
Magpie, is there any way to visualize the endpoint without starch and iodine?


I don't know if there is any other easy way. It could probably be done potentiometrically, but that takes special equipment I guess.