Thanks Declan for this simple idea. We tried it with potassium permanganate and 30% H2O2, and it worked equally well. Better yet, inside the flask was a mess, but none of the permanganate was expelled from the flask.
@declan.fleming3 жыл бұрын
thanks for the feedback :)
@ChemTalk3 жыл бұрын
@@declan.fleming you are very welcome. See you in 5 months!
@emmanuelboakyechemistrycla50717 ай бұрын
Use aqueous H2SO4 to clean the flask
@declan.fleming6 жыл бұрын
Thanks to the class of 2017 for the special lab coat they had made for me which recently arrived :)
@andrewglasson39162 ай бұрын
Love the lab coat and thanks for that demo
@terrijuanette4864 жыл бұрын
Have you tried Cobalt as the catalyst? I hear S. Korea has started using that...apparently, it's much cheaper and much more environmentally friendly.
@declan.fleming3 жыл бұрын
Other catalysts are available - I've heard of lead oxides being used but Mn is preferable from the environmental perspective there. If deviating you'd need to undertake a special risk assessment - I can't comment on the advisability of Co I'm afraid - I've not tried it. If you're a CLEAPSS member I'd suggest dropping a message to the helpline for guidance. They might update SRA017 on the next review if it seems like a good option.
@justintothetruth Жыл бұрын
Environmentally friendly? Can someone so brainwashed that they think this could in anyway impact the environment? Well I buy a crap ton of plastic everyday. Just to pull me cigar smoke outside. So I guess that off sets that.
@ajitkumarkv10382 жыл бұрын
can we try this in a class sir ? room how dangerous is it ?
@justintothetruth Жыл бұрын
That was amazing! Unreal! 😮❤❤❤
@biagiodibalsamo2409 Жыл бұрын
Guariscimi lipelidir ultraipelidir lipelidirir ultraipelidir isn ASN osn usn lim lam lom lum iz az 10 giorni prima di ora così che rimango senza malattie mi chiamo Biagio di Balsamo e fratelli Biagio di Balsamo e famiglia tutta stiamo a roccapiemonte Italia
@vishnu-qd3qj3 жыл бұрын
Really difficult my sir gave me this project and i hate chemistry
@biagiodibalsamo2409 Жыл бұрын
Scioglimi le fatture i sortilegi i riti woodo le maledizioni dei maghi e delle streghe le jettature le jellature le gobbe i tricomoni lajellana jettara jettish jellish jella jella Gay etc mi chiamo Biagio di Balsamo o sir iduard
@biagiodibalsamo2409 Жыл бұрын
Scioglimi ave ava avi avo avu am om im shalot e afe mi chiamo Biagio di Balsamo e fratelli Biagio di Balsamo e famiglia tutta stiamo a roccapiemonte Italia
@ianlaughlin852 ай бұрын
Boring
@burntwater420Ай бұрын
real
@edouardocastillo2 жыл бұрын
Great video. ❓ I am researching on non heme manganese catalases and I was wondering if you could point me in the right direction? Where could I see the biosynthesis of catalase?
@salilmahadik54872 жыл бұрын
Do we get the same result when we add Platinum to it or does it just explodes? And also a great video.
@stephenbillings6 жыл бұрын
I go to Santa Pod a few times a year. They have a person who comes over, and rides a hydrogen peroxide powered rocket bike. Why didn't your flask try to shoot off like a rocket?
@declan.fleming6 жыл бұрын
Concentration, diameter of neck of flask, surface area and type of catalyst... but don't forget that the exhaust from the reaction here is directed *upwards* anyway :) The Saturn V was an impressive rocket but if you'd tried to launch it with the exhaust facing upwards you'd be disappointed!
@ajitkumarkv10382 жыл бұрын
is it good for our lungs sir ?
@dominicesteban3174 Жыл бұрын
What is "100 volt peroxide"? I've never seen hydrogen peroxide sold with that concentration UOM. How does this map to % concentration in the manner peroxide seems to be commonly sold (3%, 12%, 30%).
@japedicini184 ай бұрын
100 vol = 30% hydrogen peroxide
@gabxxx74113 жыл бұрын
Nice video! I have a question: since very small MnO2 particles are produced in the reaction and some of them will of course be released in the smoke, do you think that this could bring any exposure risk for people in the demonstration room?
@gabxxx74113 жыл бұрын
... and, in particular, for teachers (like me!) repeating the demonstration several times every year for many student classes?
@declan.fleming3 жыл бұрын
it's an excellent point - this is the reason for the larger-than-usual distance from which to operate (5 m). You can see me stepping away reasonably swiftly. In a well-ventilated room CLEAPSS have judged that WEL unlikely to be exceeded.