Hypergolic Reaction - Periodic Videos
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- Опубліковано 22 тра 2024
- Pete shows us a fiery reaction that doesn't need a match. For more on hypergolic reactions see our Lunar Lift-Off video.
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As a bonus you also get cartoon-like, comical sound effects.
I wonder how much thrust that tube had.
Best sound ever..
As soon as he said "I think we should try a little bit more" I got a big smile on my face lol
Excellent and an old iconic reaction going back to the beginnings of the sounding rocket era of the 50's. Acid an Aniline is also a great one, used in the Wac-Corporal sounding rocket as the propellant in the Corporal upper stage.
Awesome to see someone showcase this reaction!
I caught a very small whiff of N204 my first year of chemistry. It made me feel ill instantly. That's how I learned respect for chemical vapors and learned to keep them under a hood when experimenting.
next we need some monemethylhydrazine
Yes. And there are also additional molecules, of the formula N(n)O(2n), at higher temperatures. But at room temp, it's mostly NO2. I got that from "Mellor's Modern Inorganic Chemistry," 1967 ed..
I like how he is so calm while doing the reaction. If it was me, i'ld be like hehehehehehe
i love that noise when he dropped them in
The problem with hypergolic fuels is that they are often difficult to handle or poisonous. That's why astronauts returning in the Space Shuttle had to wait in the spacecraft until all traces of contaminates from the hydrazine / nitrogen tetroxide thrusters and ammonia fuel cells had dissipated. There is research into new "green" hypergolic fuels that are less corrosive and do not produce poisonous fumes.
Pete is awesome! And he said N2O-fire instead of N2O4 lol
I don't know why, but I always enjoy Pete's videos (and the Professor's) the most. They're all wonderfully entertaining and informative lol I guess he just always demonstrates semi-explosive reactions =P
Hats off to you! When teachers are excited about teaching, students get excited about learning. Cheers!
awesome video! please continue to upload, i would love too see more
Wild and great stuff as usual ;) I've never seen a pipette like that before. Was it specially made for the job? I do hope there are some outtakes.
I thought they were going to play around with Devils Venom for a second....
How about adding a diagram or two showing/explaining the reaction?
Awesome stuff!
Nice to see you guys doing chemical concepts as well as elements.
Well hypergolly......
That's such a funny noise. It's cool how it changes pitch.
there should be more videos about reaction types. going into whats actually happening at an atomic level. i would love to see that
Fantastic!
For those of you who are woundering what N2O4 is, its dinitrogen tetroxide
The nitrogen often recombines to N2, after all it is an energetically stable compound. But since the reaction is incomplete there are probably a number of different products, like nitrous oxides, CO and C along with the ones you mentioned.
please inform me, What is the name of the gas that was used as an oxidant for the hypergolic reaction???
""I Had A Hand In That Reaction... ""
I Like This Phrase That I Heard From One Of Your Videos.
The landing craft used in the Apollo missions used a hypergolic reaction that used a chemical used in this demonstration, dinitrogen tetroxide (NTO). This supposedly made engine start a virtual certainty because it did not rely on an ignition source. However, you wouldn't want to use NTO to land on a celestial body too much farther out because it freezes around -10ºC.
Awesome i love this stuff.
Another one is potassium chlorate, sugar and sulfuric acid. Sulfuric acid is a very strong dehydrant, and the dehydration reaction creates quite a bit of heat. Adding an oxidizer such as potassium chlorate speeds it up so much that the mixture spontaneously combusts.
Fascinating!
Okay ;) I look forward to seeing those vids then. Hard to believe some people haven't yet watched them all ;)
omg the sounds is so trippy
do they dispose of testtubes after these reactions or clean them and reuse?
Woah awesome!
The brown liquid is N2O4 but it's colourless in its gaseous state.
N2O4 is in an equilibrium with NO2
It's not possible to get pure N2O4 at room temperature and pressure but the experiment works a treat none the less!!
Very impressive??? Which part of Australia are you from???
Its actually an equilibrium reaction. there will be some NO2 and N2O4. the presence of some NO2 will colour the whole thing. There will be some NO2 and N2O4 no matter what temp.
So cute; thats the happiest little test tube I've ever seen.
Only when spoken. It's still written as tetraoxide.
Molecules have energy stored in the chemical bonds. If you can rearrange those bonds to ones that store less energy, you get the energy out. The more energy comes out, the more likely a reaction is to proceed on its own. You need to put some energy in to get it started but, in this case, the energy required to start the reaction is so low, it can come from the heat of the chemicals.
you guys rock!
I love that sound haha.
hey did peat lose his wooden bracelet (shown in the video) because i found one just like that on the beach :)
Gotta love those noises.
@guitar23man23 Hypergolic means the two chemicals starts burning as soon as they get into contact with one another. A puddle of gasoline is in contact with the oxygen in the air, but it still requires a spark, a flame or something to get it to catch fire. So gasoline and air are non-hypergolic.
Is it N2O4?
Sometimes the water, manpower and cleaning agents cost more than an actual test tube. The cheapest ones go for about 0.17 € (thin 20 ml). It would add up when you conduct dozens of reactions and throw them away after a one time use. However some residues are so hard to remove that we would just throw the test tube away.
It was actually the Apollo 17 "moon buggy" it had a camera attached on the back and it was controlled by mission control back on Earth.
Wow super experiment 🤩🤩🤩
when the N2O2 is in the tank is it in equilibrium with NO2?
measure to see if there is any thrust !!
attach a dense cork to the TT with a small hole and keep it on a scale ;D
What is a balanced equation for this reaction?
I'm a highschool student aspiring to be a chemist, and this stuff fascinates me.
I'm specifically curious in this situation as to what the products of the reaction are. If I'm not mistaken, most, if not all, combustion reactions have H2O and CO2 as biproducts. But that makes me curious as to where the nitrogen and such go?
this remmember me when i mixed NaOH solution with foil in test tube, and ignited it. It burned like a candle. after i added soap and made burning-exploding bubles.
very cool!
I like Pete's bracelet!
First video that made me spontaneously giggly. Thanks Brady
Well can the same thing be done with Acetone and liquid NO2
So,what is the brown liquid?
makes a cool noise!
Are there any chemical reactions that don't produce heat? Are there any that actually get colder?
Brady, I don't know how much more work this would be but Pete's explanation of the structure of the chemicals used made me dearly miss an overlay of the actual formula on the video. There are SVGs with transparent backgrounds on Wikipedia so I would naively assume that it wouldn't actually be that hard to do this.
Congratulations, good sir, you win The Internets today.
Hahahaha! Badass XD
I like the sound it makes, "frouuuuul!"
Everything beautiful is far away.
Do you mean the third as in they left three cameras?
And I suppose I just feel like it's really precise to be remote controlled from so far away, presumably with a delay that would be fairly substantial on any controls they gave it. The lift off thing I suppose makes sense as well, but then again the level of math and computer power required to calculate that level of precision back then, just for a few seconds of video...
I'm not at all trying to imply it was fake! Just being decisive. :D
24 C is considered a "warm day" in Nottingham?
is the equation for this 4 C6H5NH2 + 13 N2O4 --> 14 H2O + 24 CO2 + 13 N2? He said there is some carbon, but would that just be the pyrolysis of the aniline?
I think this is only one aspect of chemistry. I believe it is Pete's speciality too ;)
these videos are so much better than boring lecture that our dumb chem teacher does.
I hope a this same reaction with a bigger pipet, and a bigger test tube is in the works.
And what was the slip?
Huh.
I know you're joking but, how DID they film that clip of the moon take off in this video?
I'm not one of those people who thinks the moon landing was faked or anything. I know there is a completely logical explanation of it, I'm just curious how they did get the camera to follow the spacecraft?
its like Mn2O7 with any organic structure or like (KCIO3+fuel) and H2SO4
it´s the dimeric form of nitrogen dioxide, N2O4 (Dinitrogen tetroxide)
Yes but maybe i am wrong but i think n2o4 is x2 heavier then no2
who filmed the moon take off?
I forgot about those cold packs. Also, I found out that rechargeable lithium ion batteries get colder when they reach charge termination.
You guys should do some francium.
They left an astronaut behind to get that shot. Some people say he's still up there, living off moon lichen and the dust from passing comets, waiting for the day the US government gives NASA enough money to send another shuttle back to the moon, and pick him up. He's quite old now, but people live longer on the moon.
Bill was a great guy.
He said at 2:55 that the pipette had been specially made.
watch it with the CC on ! lol
thanks xD
sorry, i did not understand it, how is the gas called?
Not a problem. :)
Ah yes right you are thanks. Don't know how I missed that first time around.
Would be nice to see some other reactions which don't just generate heat and what not. Really cool reaction though.
It's 8 C6H7N + 31 N2O4 --> 28 H2O + 48 CO2 + 35 N2 actually. You didn't include the nitrogen from the aniline and there wasn't enough oxygen from the dinitrogen tetroxide to oxidize all of the carbon.
Now try it with that giant test tube!
Where does the carbon come from?
Anniline, as mentioned, is a benzene ring bonded to NH2. The complete combustion taking place would product N2, CO2 and H2O. Obviously there is formation of CO and solid carbon as well, which you can see from the fact that there is a substantial amount of soot on the inside of the test tube.
Nitrogen reactions. Fun
If anyone's curious how they actually got that shot, what they did was leave a camera there, take off just a little bit, then when they figured the shot was good they did a U-turn went back and got the camera then they went home and became famous
Ah, I love these guys who blow shit up
Nice :D 5*
the sound it makes... so cute>
nice.
Have you heard of the pharmaceutical industry, where most decend chemistry graduates end up? I think that is fairly useful ;)
nice video ... make more vids, they're god !!!
Okay