Chemical Forums

Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: sharbeldam on September 13, 2019, 11:43:57 AM

Title: H2O2 concentration for decomposition
Post by: sharbeldam on September 13, 2019, 11:43:57 AM

I tried reacting 3% H2O2 With KI, the reaction wasn't that fun at all, the liquid barely went up a little, I think that i need a higher concentration of h2o2 since my KI is 99% pure.
The problem is that i can only buy 30% h2o2 online, is that too high for this reaction? or it would be good enough?

Title: Re: H2O2 concentration for decomposition
Post by: AWK on September 13, 2019, 12:22:26 PM

You need 6-10 % (not more) hydrogen peroxide. Dilute 33 % hydrogen peroxide with water in ratio 1:4  (4 volumes of water)
https://sciencebob.com/fantastic-foamy-fountain/
Note - yeasts instead of potassium iodide are used (less toxic to the  environment)

Title: Re: H2O2 concentration for decomposition
Post by: sharbeldam on September 13, 2019, 12:39:41 PM

Thanks!! can you tell me how is KI toxic to the enviroment or do u mean the products of that reaction?

Title: Re: H2O2 concentration for decomposition
Post by: Vidya on September 18, 2019, 02:50:58 AM

It can cause damage to potassium hydrogen phthalate peripheral
nervous system.