Video není dostupné.
Omlouváme se.
How to make Carbon Dioxide (The Old-Fashioned Way)
Vložit
- čas přidán 23. 09. 2014
- Before bottled gas was delivered, chemists would make their carbon dioxide with a Kipp's Apparatus.
Dr Samantha Tang (with Neil, of course) dusted off the one stored on Professor Poliakoff's window sill.
REDDIT DISCUSSION: redd.it/2hbyqk
More chemistry at www.periodicvideos.com/
Follow us on Facebook at / periodicvideos
And on Twitter at / periodicvideos
From the School of Chemistry at The University of Nottingham: bit.ly/NottChem
Periodic Videos films are by video journalist Brady Haran: www.bradyharan.com/
A run-down of Brady's channels: bit.ly/bradychannels
Thanks Andres Tretiakov for the bomb bag!
I love that he admitted his error and didn't blame his colleagues. A true professional.
I expected a five second video of dr. poliakof deeply exhaling
darthspeaks
Just breathe
That’s definitely the VERY OLD fashioned way! Except the product is nowhere near pure, containing oxygen (metabolism is not 100% efficient!), water vapor, nitrogen, and whatever your digestion and/or metabolism created from your last few meals. Even acetone perhaps!
@@allanrichardson1468 if there's enough acetone might even start to smell sweet, also time to go see your doctor...quickly
Professor Poliakoff's idea of "let's add some visual flare" is so awesome. Though things didn't work out, the idea that he thought, "Hey, let's make some colors happen" makes me, as a viewer, grateful to him for caring about us!
I love watching chemistry not go as planned just as much as watching it work out. Because then, it really gets the ol' gears working and makes you think more. Cool stuff.
I always like videos where you guys screw something up best. It reminds us that academia is a human pursuit, and you always seem to treat failure as an opportunity for humor and learning.
Failures have led to new discoveries too ;)
@@Svedgehappy accidents
This professor seems a like very intelligent, experienced man. Would've loved to have someone like him during my learning years.
So glad you posted this. We just had one of these donated to our high school chemistry program with a load of older glassware and had no idea what it was for.
"How to make Carbon Dioxide the Old-Fashioned Way"
siiiiiiiiiigh...........
Gun Sunnuva hahaha😂
Like we don't have enough of the stuff already.
Steve Read and yet there’s a shortage affecting North America, i can no longer get diet dr. Pepper, and several different brands of pop are disappearing from store shelves.
The reason why the first tests with the transition metals didn't work is because the anions were all those of strong acids, and thus, poor conjugate bases. In order for gaseous or dissolved carbon dioxide to form carbonate or bicarbonate ions in solution, the presence of hydroxide ions in the water is necessary. Since the anions of the salts used don't pull protons off of water molecules very well, hydroxide ions will be rare. Additionally, transition metal cations are actually relatively strong Lewis acids (hence why they form precipitates with carbonate/bicarbonate and hydroxide ions), and so their solutions will have a relatively low pH, decreasing, even further, the concentration of hydroxide ions in solution.
***** I can't say for sure, but as far as I'm aware, an electrical current won't shift the overall pH of a solution in either direction.
Lorenzo Pacheco If it's strong enough you could electrolyse protons to H2 and raise the pH.
stinooke At the same time, you're also removing electrons from water to form oxygen gas. While pH/pOH values for areas surrounding the electrodes shift due to the influx of electrons at the cathode (lowering pOH) and the loss of electrons at the anode (lowering pH), the overall acidity/basicity of the solution will remain unchanged.
Lorenzo Pacheco Not necessarily, if the salts are iodides, chlorides or bromides.
stinooke Or any anion with a reduction potential under or slightly aove that of O2/H2O (formation of O2 requires a large kinetic overvoltage)
This is a magnificent apparatus. Very simple, very elegant and it even looks nice.
Weak acids like H2CO3 don't displace sulphate and nitrate from metals very well. It might have worked better with copper and lead acetates, or salts of some even weaker acid. Succinates, perhaps.
Codenwarra Cove exactly, any salt whose conjugate acid is weaker than carbonic acid works
+Codenwarra Cove:
Yes, I was surprised that they assumed that it would form CuCO3 and H2SO4.
@@louistournas120 yeah, exactly! what were they thinking?
Cu(CH3COOH)² isn't soluble in water itself I think
The first of the flow could have been mostly air that was contained in the flask originally. But yours is a better explanation.
This is awesome! I'd really love to see more demonstrations of older tools that chemists have used.
That's awesome! Thank you guys for making all of these awesome videos!
Multai thanks for watching them
5:28 The colours in the video are so pleasurable I cant contain it.
What a timely video. I was looking at this apparatus in a catalogue yesterday wondering how it worked. Thanks!
I LOVE IT
its soo cool to see neat old glassware
you guys should do a video on high vacuum lines and Schlenk lines
Amazing!
I really like those old fashioned chemistry demos!
Fantastic stuff prof! We have one of these in our chemistry class and even the teacher didn't know what it was. At least I know now
for someone so accomplished and distinguished the prof is such a nice and humble man
It is actually very interesting to see how various chemistry apparatus works and what they are used for. I really hope to see more videos like this in the future. Thanks for the video.
Thank you for demonstrating the Kipp's Apparatus so well! I've always seen these things (as relics or props) and wondered how they functioned. Cheers!
I love old tech and methods. You can learn a lot from obsolete things like this, Not to mention how interesting and cool it is. Thanks for sharing this with us!
A great video showcasing a marvellous machine whose simplicity is both ingenious and fun to watch!
***** cheers
Could not agree more just beautiful!!!!
The Kipp's apparatus is one of my favourite! It's in my old 1800's [French] chemistry books…
It's always fun to watch the team put together interesting experiments~ Kudos to all the Dr and Professors~ Would love to see more crazy and fun experiments :D
I really love the professor's humility.
I really enjoyed this thank you :) it was a wonderful piece of apparatus with such an intelligent yet simple design.
Used to love Kipps apparatus. We had one at school and also in the first laboratory I worked in a histology lab. Also had them in several schools I worked in later, we also used one for generating hydrogen sulphide.
The fact that you kept the failed attempts in this video, garners my respect for you. Peace
I witnessed one last year, took me a while to get my head around it. This video explained it perfectly
Aww thanks so much for uploading this. Last week I found a Kipp's Apparatus in my 'new' lab and I wanted to try it, but I couldn't wrap my head around how it worked. Now I get it :)
Decimetre cubed. I've never heard someone call a litre that before.
The litre unit was designed after people realized that saying cubic measurements was obnoxious. Like, cubic centimetre is the same as millilitre.
do americans use mol/L instead of mol/dm3?
Explicit Banana Yes, that’s how we’d typically assign units for molarity.
Liter is not an SI unit. It is an acceptable unit, but strictly speaking there is no SI unit for volume, because cubic decimeter is after all, just meters.
Sort of like SI seconds. Hours are not SI units, hours are just bunches of seconds.
@@larryscott3982 Whar is with m^3?
Hi Sir Martin,
I have never heard of this ‘Gas Machine’ which produces Gas on demand, thank you and the Videographer and colleagues for explaining it.
Yet again, another excellent video which left me with a smile on my face. As always, I have learnt something new and interesting.
Such an elegant design with the Kipp's. I really enjoyed watching it in action❣💝
Destin just achieved greatness in my book. It wasn't the tour of the ISS, it wasn't fist bumping Obama, it was being blessed enough to touch the professors spectacular hair.
You know which Videos it was? :)
I LOVE a Kipp's Apparatus... we had one at school but it was a full of green gunk and just sat on the shelf.
Thank you, Professor! Wishing you well for a quick recovery from the recent fire.
What a great teacher and person! Professor Poliakoff with all his experience and knowledge is humble enough to say in the video that he might be wrong. This is the best colorful solution! :)
Ohhhh look at that bomb bag. We had these as kids back in the mid 90s! I had no idea they are still around.
Amazing! I love seeing the history of chemistry in action! :D
As with many old things, the Kipp's Apparatus is both functional, and incredibly beautiful.
That KIPP'S device is an elegant design and as others have said sometimes you get it wrong but they recovered nicely.
I like how SMARTEREVERYDAY was just caressing that dudes hair
I'd always thought about what I'd do if I were placed in a situation where I couldn't obtain any pressurized tanks, like what apparatus I would use. This is brilliant!!
What a clever little device. Neat! Also I dig the bomb bags, they're wicked cute.
I would love to see more reaction videos :)
Justin Valderama we are always a making more
***** We are a always making a more. It's a me, Mario! Sorry had to :D
Camroc37 Sorry Mario, the princess is in another castle.
christian newcomer :F
The carbonate (CO3-2) has to be free in order to react with Cu2+.
CO2 + H2O-> H2CO3-> H+ + HCO3-. The second deprotonation is too weak to produce substantial amounts for carbonate. If it was in a strong base, it might work. However, there you would have precipitation of hydroxides.
The amount of over-explaining in this video is incredible. I especially love the aside where we learn how a valve works!
Love your work Periodic Videos :)
I absolutely love the professor's honesty and modesty of admitting he got the chemistry wrong. Not one bit of ego or shamefulness, sending a clear message that all humans are prone to error, no matter how experienced or educated they are. That's what being a scientist is all about! You have my sincere admiration, Prof' Poliakoff. You're setting a wonderful example of scientific integrity. :-)
I'm now thinking of buying a Kipp's and converting it into a bong...
Science bong...
You would be better just buying a nice "science-looking" bong… Chances are that you'll get a used Kipp's apparatus which was used for toxic gases (its main use…). A brand new Kipp's apparatus can cost many thousands dollars!
You really don't want some arsine, sulfane or cyanides in your weed…
Bonus: Now you can precipitate hydrochloric acid, and pickle your metal pipes so they're nice and shiny! :D
Just make sure to remove the chemicals when you're done. Inhaling hydrochloric acid probably wouldn't be fun.
Would also make a nice supplemental CO2 generator for indoor grows ;)
Chris SSDD actually curious about that... lol... would the acid and calcium chips cost more than say lighting some candles/gas stoves? or do growers have a better way to make CO2?
Pretty clever yet simple piece of equipment.
Seeing the Kipp's apparatus brought back memories of Chemistry lessons in the 1960s including one where the apparatus had a bung in the side of the bottom vessel, presumably to enable it to be drained easily. The bung was, of course, pushed firmly in place, or should have been. During one lesson it came loose and acid flooded out across the bench and down the front of one of the pupils.
Our Chemistry master at the time was a large, enthusiastic individual. He picked up the pupil, threw him in the large sink at the end of the bench and turned on the water tap full blast. I seem to remember him also grabbing a Winchester of ammonia too and adding that to the sink to neutralise the acid but that may just be my fanciful imagination.
Happy days.
Best Proctor Silex Coffee maker I have Ever Seen!
This was a very interesting video, I cannot wait to study Chemistry wherever I attend University!
A beautiful invention! Very elegant.
"you keep on getting gas until the acid runs out"
hmmm, that's how my dad described the 1970s 🤔
What a simple and brilliant bit of engineering.
Kitt's Aparatus is very creative engineering. I like it!
So cool. Dr. Sam Rules!
What old chemistry? We used this Kipp apparatus in high school and then on first year in university chemistry classes. It wasn't so long ago. 20 years is not long time ago :)
Simply amazing!
Beautiful!
My explanation for why the first three precipitate tests did not work is because carbon dioxide predominately exists as carbonic acid in neutral solution. If you want to form the carbonate anion to form the precipitate, you need to have a basic medium (that's why the calcium hydroxide test worked so nicely). When you write out the chemical equation for carbonic acid reacting with copper sulfate, you'll find out that it would quickly make the solution acidic IF the precipitate is formed. This cannot be the case since the acid would then react with the carbonate formed, reforming the copper salt and carbon dioxide.
The problem is that most colored metal carbonates also have highly insoluble hydroxides, so it will be hard to find a colorful precipitate proof that the gas is carbon dioxide.
My suggestion is to bubble the carbon dioxide into a weakly basic solution with phenolphthalein. This will slowly result in the disappearance of the pink color due to the carbonic acid reacting with the base.
Love your videos, thanks so much for doing them. :)
The chemistry is awesome😍😀
A perfect example of the fact that science is no less exciting when things don't work the way you expected them to compared to when everything works as expected.
The college I study at has a network of gas lines of many types, there are lines of purified Oxigen, Helium, Argon, 'synthetic air' (guess it's air with standart concentration of it's components) etc.
There are old labs, however, that date back to the 1930's, and are not provided with these gas lines. on the second or third class when I entered college, we got to use this device. I found the way it works to be very clever.
Can't remember if on the same lab, or a nearby one, there's an extended periodic table as well.
Brilliant! Simply so!
I wished I found this program a long time ago!!
Loved Kipp's apparatus. I had three in one lab, for carbon dioxide most often, hydrogen, and hydrogen sulphide.
Thats awesome idea !
"Enormous Bang" :)
There was supposed to be an earth-shattering kaboom!
big universe
I want to become a chemist now. Studying how matter reacts and behaves is so interesting!
please show more old or antiquated apparatus experiments
The Professor demonstrating how to be humble, and how to gracefully accept when you're wrong.
Something most of the world cannot or will not do.
I bet the glass blower had fun making that apparatus! :-)
Thanks for sharing!
Often used a Kipp's generator as a source of hydrogen sulphide back in the early 1950's when doing "wet" chemistry for routine qualitative analysis in a chemical laboratory in a manufacturing company - it was standard equipment in those days.
I would like you guys to do some hard to do Grignard reactions or make c-c bonds in other fashions.
What an elegant apparatus!
Periodic videos of decency and kindness.
Really liked the BG music in this video.
What a brilliant way to make a constant gas, 1800s rock.
Please make an video about "catalysts", it would be interesting to know about those compounds, like vo5.
So what exactly was the problem with the other solutions? Now I'm curious about the details.
Chemical equilibrium. The reaction of sulfate salts with CO2 lead to the precipitation of metal carbonates and the formation of sulfuric acid derivatives, such as bisulfate. The problem with this is two-fold. Firstly, sulfuric acid is a stronger acid than carbonic acid (the source of carbonate ions in aqueous equilibria). So if you take CO2 and water, which generates carbonic acid in solution, the carbonic acid cannot generate sulfuric acid because sulfuric acid would be much stronger. The second problem is transition metal sulfate solutions are slightly acidic in their own right, and that works against the formation of carbonic acid in the first place.
BEAUTIFUL, Thank You; from Australia
I love these videos
Justin Cooney thanks
***** Yeah, just please try using less monotonic music in the background. I barely stand the same tone for more than 10 secs. ;)
Keep up the good work!
rageagainstthebath Eminem and science don't mix. Lol
I have used it in my high school!
I love this, it's like alchemy.
Ingenious.
nostalgic! I used to buy the exact same bomb bags in bulk as a kid
Es posible que no hayan resultado debido al pH. Para generar los carbonatos deben asegurarse de que el pH sea básico. El CO2 es ácido por lo que acidificaba las soluciones y no se observaba precipitación. Excelente video! El aparato de Kipp es genial.
Im curious also of how much pressure can be made with this apparatus.
Beautiful piece of chemistry. It is called "Kippův přístroj" in Czech.
I remember having to draw a Kipp's Apparatus for Chemistry at school in the early '60s! [For O Level Physics atoms weren't even on the syllabus]
I used to have something similar to that, used to make all sorts of gasses. Can't remember too much about it mind you
Seriously if you guys and Breaking Bad was around when I was in school, I would have been so much more into Chemistry. (Not that I want to make drugs) I've just learned how interesting it all is
Who dislikes a video like this? Who doesnt like chemistry? I find it rather interesting
This is super interesting