ฝัง
- เผยแพร่เมื่อ 10 เม.ย. 2016
- In this video we are exploring a variation of the iodine clock reaction that can be pretty easily done at home. There are load of different variations out there and I am going to explore another one in the near future.
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Nile talks about lab safety: • Chemistry is dangerous. - วิทยาศาสตร์และเทคโนโลยี
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Everyone probably always complements your chemistry skills, and they are impressive. I would like to point out that your video editing and video skills in general alongside your oddly calm and sarcastic narration is really what makes your videos.
@@sirmeliodas608 You sound kinda NaCl-y.
I agree. Not only is his science knowledge and application great, the video making process is spot on.
@@ElixirOfEuphoria LOLOLOL
M
@@kimyafobiya M
Bruh the development in how u create ur work (video wise and chemistry wise) is amazing, the snap chat version of this is a prime example. Great work man !
hey we did this exact experiment in ap chem this morning!
@Late to the Game this was entertaining
My gut says that this experiment is hard to mess up. I used purified tap water, and I didn’t really measure anything out, just kind of went with amounts that looks the same as yours, and it still turned out perfect.
I freaked out when i saw the iodine color i thought i made a disaster and i was poisoned
Does the color fade away and start cycling again or is it just one time thing?
@@satriaantawicaksana830 one time thing
I tried this reaction and it didn’t work any ideas why?
is it ok to use hyperol tablette as hydrogen peroxide? will the carbamid (urea) interfere with the reaction?
i just spent 5 hours on binge watching your videos.. my brain is full of science now...
“don’t try to dissolve everything bc it’s not gonna happen” omg sassy😂
lol
@@NileRed holy sh*t, you fu*cking killed her dude
@@kadrinho898 Not even a capital L!
@@kadrinho898 LOL
Just did this experiment for my diploma project in school today. Your video helped so much, thank you!
Great demonstration! I would love to see an oscillating color reaction
Btw is it possible to extend the time up to... lets say 10 minutes?
+Philipp Kollenz I think it is possible. cool it down to like 1C and it will go super slow. On top of that, increase the concentration of vitamin C, decrease the H2O2 and play around and it might be able to get that long. I do want to revisit the oscillating clock and i will do that soon :)
Beautiful variation of a classic demonstration. Thanks!
U.
Nice white background! I really like the demonstration when the solution is stirred - the colour appears suddenly and uniformely. (Some people think that this dark-blue colour appears as quick as a night in Egypt, and that's why this reaction is also known by the name "Egyptian Night")
BTW, I thought that it's I2 that makes a nice blue complex with starch, but apparently I was wrong.
7:55 is the best reaction in this video
Very nice video and i like the nice clean white background!
+Da Moose haha, a bunch of printer papers :)
+GamerGuy ephedrine would be hard to do as a total synthesis. It's a stereoisomer of pseudoephedrine (sudafed) but it has a stronger effect as a bronchodilator than pseudoephedrine. It's sold behind the counter along with the Sudafed products. It's marketed as a bronchodilator for mild asthma symptoms. The brands are Bronkaid and Primatine tablets, and the Primatine has a generic. They were all off the market for a while but are now back on the market.
Ephedrine and pseudoephedrine are the same molecule it's just that it has 2 chiral centers so you end up with 4 stereoisomers, 2 of which are l- and d-ephedrine and 2 of which are l- and d-pseudoephedrine.
Both ephedrine and pseudoephedrine can be reduced to methamphetamine quite easily (you're just removing the hydroxyl group from the beta carbon and bam! meth) so that's why they're behind the counter and a limit placed on how much you can buy. The limit is actually quite large though. (I'm going off of how the laws are here in Michigan, other states might have stricter laws, and I don't know what the laws are like in Canada or Europe for pseudoephedrine and ephedrine.)
You could extract it from plant sources.
Purple cloud = nuka cola :)
I would LOVE to see a Q&A video, and of course the methylamine video eventually.
+kjpmi Heisenberg.
Brokkoli7hun ¯\_(ツ)_/¯
Had to do this 3 weeks ago as my practical exam....wish this was uploaded earlier
Great production value!
i'd like to see this put into one of those soda streams, could really probably prank people on facebook into believing you found the secret recipe for coke
Okay here is a story and a half. I was listening to music and Corduroy Dreams by Rex Orange County came on as the introduction of that song was playing I pressed play on this video and damn. I realized that Nile's voice intonation perfectly matches that song (which is in E major btw) so for the future Nile if you ever want to add music to your videos make sure they're instrumentals in the key of E major. 👍🏻
This reaction is something like the Lugols test, it happens because the iodine gets inside of the helicoidal structure of the starch (which is a polysaccharide) , the elemental iodine color is blue , so that's why you get that color
Great video!
(But the spoon mixing killed me xD)
I saw this reaction in a highschool demo when I was like 6 years old and it blew my mind
How far you've come. I forgot about the dollar store funnel days.
Nice to be ale to do this with real accessable materials.
21 people Tryed to drink the " coke " lol my nieces and nephews absolutely loved this totally got them hooked on hanging out in the lab unfortunately almost none of our lab work is exciting to kids and not a safe environmentThanks and I love your clips !!
the drop that fell out at 0:10 changes color at 0:12
pretty cool
Where are you from?
I'm just wondering where the hell you get a coke bottle with a volume of 237ml.
+P@r@m3d!© Canadia
anywhere in canada
they sell it in the US too, its just labeled as 8oz.
He lives in Montréal, Canada
Jonathan Odude because they are bottled in fluid ounces instead of liters. you do realize there is another system besides metric right?
This might be a cool series for you.... chemistry you can do at home with kids (under supervision)....
Another great video!
It'd be cool to see this done again, either here or on the second channel, done in the lab method with thiosulfate. It would be a very useful addition to a lot of chem 2 classes! Most of the demos on youtube suck.
It worked! Thank you so much good sir!
+Mohsin Zaidi no problem!
It worked, great video.
+Nile Red thanks for doing the video with Tums!
What if you kept solutions a and b right above freezing, then mixed them. Hopefully creating a flash freeze. I wonder how the reaction would change while in fine ice crystal form.
We did this as a titration to find the concentration of vitamin c in chemistry last week.
next video, making legal LSD anlogues :D
I remember doing this back in general chem class.
Can you change the Tincture for Potassium Iodate? What would be the correct concentration for that? Thank you :)
Thus is a really cool reaction, but it was way cooler when I thought it oscillated back and forth at least a few times.
4:12 magic✨
Very nice video and good explanation !
Although I have thiosulfate on hand I would still like to know how many grams of PURE ascorbic acid was used for this experiment cause I only have it as a pure crystalline powder at the Lab.
Best regards.
Did you figure out how much? I would like to do it with ascorbic acid as well.
This reaction will be nice to see in a slowmo cam like phantom..
I really want that your channel gets more subs, views and more patrons
+toyota prius memes thanks!
man, i miss chemistry practicals, kinda used to get bored with titration, but after seeing this I kinda miss it. :(
The chemical reaction looks great, and a very fascinating observation of the chemical process through a visual frame! I carefully followed your lecture, and I would like to thank you very much for the education, and I was carried away by creativity to perform such an experiment in my laboratory and it really worked, I am amazed :)
I had to record and share with the audience and people who know me such a magical effect of chemistry. Now I noticed that the reaction is not reversible, so when the solution turns black, that's the end. So I would ask the question, what needs to be improved in this experiment, in order to obtain an oscillatory chemical reaction with several repeating episodes of color changes, using the same substrates and reactants? I would be even more grateful, although since I am a chemist I will do my best to come up with a solution by myself, but in the meantime, please give me some space and time to try on my own, so if you have a solution for the illustrative reaction, write me the recipe on how to make it, or even better post a new video about it? Thanks bye :)
he has a video on the brigss-raucher reaction, basically what you're talking about
I actually did this at home and it pretty much worked. I say pretty much because it took about 2 minutes and it very slowly changed from clear to yellow to brown. Once it turned brown then it flashed very quickly to black like normal. Any ideas? I think it could be my iodine tincture.
Eosine :o !!
Love your videos !! :3
lit the whole time i was just like okay... okay...
but yeet ur editing is good and this vid is good too i came here for science class lol
I have 2,6-dichloroindophenol sodium salt powder... can i use it as an alternative for iodine tincture??
If so.. how can i make it a solution? how many water will i add per grams of the powder?
Thanks for the reply mate..
@NileRed, what would happen if I used potassium iodide and potassium iodine to make triodide in place of iodine and iodide conplex solution (Lugol)?
J'adore cette chaîne. :D
that was the coolest thing I've ever seen
Oh man are you going to see interesting things then. This is absolutely one of the more tame chemical demos. Keep watching NileRed and you'll see some amazing shit.
To me aside form all the fun sciencey colour changes,. my real interest here would be whether vitamin c reacts with lugol's to form iodide..and whether that is a permanent undesirable effect/ state.. I guess the starch has pertinence for those who may ingest a sticky bun at the same time.. is this the purpose of the video or was there some other point?
from someone who used to crush a lot of pills fold them into paper and roll over them a couple times with the bottom of a glass better than a mortar.
My Chemistry teacher used this video to teach us, just thought you should know
Is the iodine tincture 5% by mass or moles? I have homemade crystals so I have to make my own tincture.
Commercially available iodine 5% is w/v so mass
Loving all the Canadian products haha
0:30 EY! i had a classmate named Fleischmann many years ago!
Hey can i ask if there was a shift in equilibrium for this reaction?
Is it okay to use Hyperol tablette as hidregen-peroxide? Will the urea interfere with the reaction?
would this reaction work if my vitamin C source were liquid soft-gells with 20mg each, manganese sulfate monohydrate and fish oils mainly? should i need another method to separate the rest of the unwanted chemicals?
Hi! NileRed! Thanks for the fun video!
May I ask I use pure Vitamin C powder and Potassium Iodide(KI) instead of the C tablet and iodine tincture,
how much grams each do I use for the solution A?
The place I live only have 1% iodine tincture in pharmacy...
Povidone Iodine or Betadine will do
@@jeromecolico3536 THANKYOUUU you're helping so much😭
Why vitamin c? Vinegar or any other household acid seems like it should work as well. I haven't tried with the clock reaction, but vinegar definitely makes a black/purple starch/iodine solution turn back into a clear one. Apparently clearing out all of the triiodide. I've yet to try this, but apparently adding a base makes it turn back to a black/purple color. So, it seems it could be used as a base indicator. Which is probably something tons of people already know. I'm just happy to have figured it out.
well Explained !
We want more videos !! :)
My science/sex ed teacher used this method to explain STDs. Each of us got a glass of clear liquid. ONE glass started with all the necessary ingredients to cause the reaction (minus a pipette of other liquid) we were instructed to intermingle our contents with anyone we chose (or not to intermingle with anyone we did not want to) for two minutes then we were all given an STD "test kit" (the pipette) we were told only one person started with the STD, and if this pipette causes your liquid to change color, you were infected. Class of 40 students, two stayed clear.
fantastic!
If you dont use corn strach, wont you still get a color change from the iodine molecules?
Can I use Na2S2O3 instead of vitamin C? Great video! 😁👍
yep, that's the normal way
Good introduction
ia your iodine tincture ethanol or water based?? or does it alter the reaction in any way?
If I was a chemistry teacher in high school I'd have so much fun demonstrating this to students. This would blow their mind...
Wildm0use plz subsribe my channel also i also make chemistry videos
What if the solution A concentration is increased and the solution B remain constant, so will the reaction will faster if solution A concentration is greater>
did this experiment in middle school. v cool
@NileRed
Maybe you'll answer what I'm noy able to find - why iodine ions are colorless?
The only ions which are colorless tend to be ions of transition metals, because the way that electrons move around within the transition metal ion electron shells causes energy to be emitted in the form of colored light. The movement of electrons in non transition metal ions doesn’t do the same thing with the colored light and iodine is not a transition metal, so iodide ions are colorless.
does this reaction reverse itself like the traditional iodine clock?
This is the traditional iodine clock. The one that reverses is an oscillating a clock. Ill post a video on that soon!
Does the amount of starch affect the rate of the reaction?
Great video! Btw where can I get hold of iodide?
+Projekt Och Experiment You can get things like potassium iodide from ebay. The iodine tincture is sold at the pharmacy
+Nile Red Thanks a lot! :)
did this to grade 9 science class，all the kids were wowed
Can we use Povidone Iodine solution instead of Iodine tincture?
Does anyone know where I can find someone that did this and found the Rate Law?
Can i use another product such as antiseptic (or others that contain h2o2) instead use h2o2 3%?
If you add vit-c to the black solution, does it turn back into colorless for a while?
Shoulda done it in measuring cups 😜
I'm having a moment of deja-vu here...I can't remember if it was a short story, or a plot device in a book, but when I was younger I read some kind of mystery. In order to catch the culprit red handed, they added something to a doorknob I believe, and somehow got a second something onto the suspect's hands. When that individual ended up touching the doorknob, the two components mixed, and some time later caused a reaction. The resulting effect was that the suspect's hand had been dyed with a dark color, similar to your experiment here, allowing the protagonists to identify who had touched the doorknob.
So, my question, is it possible to use solutions A and B to set up something similar, and would it dye someone's skin for long enough to identify them? Or did the author take this reaction and build off of the actual science of it for something like science fiction?
Gonna tested in exams
Impressive video indeed
Those chemicals are found in the body, I'm wondering if a similar reaction dose occur in biology.
Thyroid hormones, glucose and vitemin c and peroxide production from the cells
Hydrogen peroxide is a reactive oxygen species, ascorbic acid is an antioxidant. Living tissue maintains an antioxidant buffer and if it were to run out that would mean the tissue is in bad shape.
That said, human tissue can alter the prevaing oxidation state to fight an infection - the snot-green enzyme myeloperoxidase uses hydrogen peroxide to synthesize hypochlorous acid and literally bleach pathogens.
Hypochlorous acid is too strong to be medically useful, but iodine is less reactive and actually used for wound cleaning. The stuff you get in a drugstore usually isn't sterile and is only intended for superficial cleaning, but sterile povidone iodine is sometimes used for deep wounds or during surgery.
Iodine is very well tolerated - doesn't burn like the lighter halogens - and the biggest medical concern is elevated iodine levels that can interfere with thyroid activity. And it's an oxidizer and it wouldn't be good to have it in your body constantly.
Oh, one last gross bid of household chemistry. The myeloperoxidase in pus or angry sinus-infected snot can be detected by exposing it to household grade peroxide. It makes a faint but nasty bleach odor.
Is the stuff safe to drink and does it taste like coke because I saw someone do it and I wonder if it taste like Coke and is it safe to drink it was done on the magic trick from Justin flom I wanna know if he switched it out so please tell me
I did this for a project in 8th grade but I'm pretty sure I measured the cornstarch wrong and low-key screwed up the reaction time. Also, I now realize that sink water probably wasn't helping me either lol.
why will the reaction take shorter if the temperature of the reaction mixtures increases?
Does anyone know how to change the dark blue back to clear? I saw a demonstration where another liquid is added after the iodine clock reaction and the water turned back to clear. I can't figure out what liquid it was.
2damax7 that liqiud must be sodium thiosulphate solution or soxium hydroxide solution
2damax th-cam.com/video/WasYuiOk5xQ/w-d-xo.html
I was going to say "More Cowbell"
What's going on here is that the oxidizer and the reducer are competing to do their particular magic to the iodine. In the end, it's a numbers game -- whichever solution is more abundant will win. If there is more reducer, the final solution will be clear. If there is more oxidizer, it will be dark. So, if you want to clarify it after, add more of solution A.
Could you please add the reference link of the theory behind this
is it possible if i use an iodine disenfectent with 1% of iodine? if yes how much shld i add
Is it safe to drink? Or how does it taste like?
Can Vitamin C be replaced with an acid solution such as H2SO4 or HCl?
No
fully expected an iodine powered clock ngl
Does it have to be Canadian corn starch?
is there a way to make it go back to clear?
I might actually be able to get ascorbate powder from the local Asian supermarket...
Is there a way to make the iodine clock reaction but you can drink it after it changed? Or even a way that it taste as coke?
Not that I know of. I really would never recommend drinking it. I also dont think it could ever taste like coke
I just saw a video called how to turn water into Pepsi by Stuart Edge. is this the process he used? if so why would the people say it does taste like Pepsi?
I hope you didn't leave that dark solution inside that Coke bottle unsupervised ;> Someone could take it for a real Coke and drink it accidentally :q
I have a question though. Two, actually:
1. Does it react only with ascorbic acid but not citric acid? Because I wonder if it could be used to tell apart ascorbic acid from citric acid? (they're both acidic, and they have pretty similar properties)
2. What is the role of that starch in this reaction?