Make Hydrochloric Acid

We show how to make hydrochloric acid from sodium bisulfate and table salt.
The synthesis is rather simple, we generate hydrogen chloride gas by mixing together 140g of sodium bisulfate and 60g of sodium chloride salt and then heating. 20mL of water can be added to lower the temperature required but this is optional. Hydrogen chloride gas will be produced. This gas is lead into distilled water to produce hydrochloric acid. Be careful though, hydrogen chloride is so soluble that the water will pull itself into the tube trying to absorb it. In the video i use an elaborate back-flow prevention system to prevent loss of the product.
Sodium bisulfate is available as a pH lowering chemical. 30mL of sulfuric acid may be used as a replacement if you have it. Although if you had that, you probably don't need hydrochloric acid.

[@NurdRage]

It's always easier to buy stuff. I like making stuff sometimes to demonstrate the science. Also the principles learned can be applied to other experiments where you can't buy the chemicals.

[@Rellcking26]

can you tell me the attachment added to the round bottom flask name i want one

[@jadentonkin466]

i did it made hydrochloric acid with ur method but i was being a fucking idiot by not using an anti backflow system and instead just pulled the tube out right before it backflowed and inhaled hydrochloide

[@jadentonkin466]

anyways tank

[@coffeecuppepsi]

It's not easy to buy anymore 😭.

[@fractal5764]

@@jadentonkin466 get a respirator

[@RollLandOh08]

i know the business, and you know the chemistry

[@sinaside]

A full reaction is what I'm thinking of

[@RollLandOh08]

I told a joke about chemistry, there was no reaction...

[@sinaside]

+Shaman Underground I tried to make a rick astley reference

[@sinaside]

+Shaman Underground okay

[@iuriSalvador]

hahaha. nice one!

[@maxwieland9287]

Whoever you are mysterious guy of chemistry, you are pretty damn cool

[@jacobrisdon3251]

I been watching these vids for years and one day my son will watch them too, looking at the hands I actually think it's a woman🤔

[@walikazmi7613]

@@jacobrisdon3251 hahahaha

[@walikazmi7613]

@@jacobrisdon3251 oh wait the clothes as well

[@garfieldalt20]

its walter white

[@dr4cula]

Man, I was so tired of doing maths almost the entire day, proving various links between triangles etc, and when I came to youtube, I was looking for some easy entertainment, but I found your video. Even though I'm not that good in chemists, your video somehow made me feel alot better. Thanks for the interesting walkthroughs and keep it up.

[@bigarmyrob]

"I want to play a game." Thats all I could think of listening to this lol

[@tonisbueso7756]

MDKDKSAJDJNFKDJDMDSÑLSOSOSIJEEIWMDSAñ

[@ikrambasl3306]

Saw 💀

[@NurdRage]

@Bluwhodesign While the great majority of comments for other videos might be like that. I find a good portion of the comments on my videos are rational and thought out. My subscribers and my audience mostly consist of genuinely interested and capable people. It is for them i keep making these videos. The idiots usually get so bored my stuff that they move on, so I'm not worried about them.

[@dirtassfukka9103]

NurdRage nice one to get the idiots watch your videos 😂

[@someniceguyon]

NurdRage Love your videos, ignore that Im creeping on a 9year old comment. Also what is the byproduct you have there? Sodium sulfate? Sodium sulfite?

[@threatprince]

hey have you ever done one of these experments outside for cops to be all like you making drugs ?

[@Crystal_D-meth]

Acetone and hcl and s2so4??

[@NurdRage]

@rushianokun heheh, yeah i do a variety of videos. i'll do a few more synthetic vids, then i'm going to do a couple of silly ones. but i'll always get back to synthetic eventually.

[@matthewking1532]

BTW, the piece is called a gas inlet adapter.

[@Re_Doubt]

Likewise

[@johnhenkel5572]

Same

[@jeffanderson3766]

Yes that was a critical bit of information .

[@olusanyatodd4083]

MY PRAYERS HAVE BEEN ANSWERED TYSM

[@ragingred8673]

@@gideonthomas2463 do you know where to get one

[@kunven]

i think it is more easy to stab my stomach with a syringe

[@anonymousscientist3838]

Yup you are right!!!

[@KomalSandhu]

hahahaha.,.

[@old-bitprogaming4857]

kunven I think it is easier to use mr muscles

[@old-bitprogaming4857]

kunven oh nice idea

[@dm-dy4ie]

That said, what's with the need to make the intro .. creepy..?

[@matthewking1532]

Could you obtain the same effect with a two hole stopper in the round bottom, and just attaching tubes to those, not having them go deep enough into the flask to get any liquid back btw.

[@StaigeFright]

I figured it out thanks anyway. It is a 24/40 distillation adaptor. Love you channel and hope you keep up the good work.

[@NurdRage]

@DominicCopeland you can do the experiments yourself, and post your own videos. The content is public domain. But my videos in of themselves may not be downloaded and posted elsewhere.

[@digdugdiggy]

Awesomely interesting! I love the simple little setups like this.

[@christianmurphy437]

10 years later

[@derrekvanee4567]

@@christianmurphy437 5 months later

[@nirbanghosh7269]

@@derrekvanee4567 9 monthss later

[@ChemicznaRybka]

@@nirbanghosh7269 7 months later

[@chemplanes10]

This is a very good method for synthesizing HCl. I've obtained a concentration between 20-30% but it's fine for most purposes. Great video :)

[@vevenaneathna]

this has been your most useful video yet. thanks

[@TheLeopardBrightsky]

Thanks! These are the very best videos I've seen.

[@xXAnthony619Xx]

@NurdRage Also I might add.... Many of your subscribers, including myself, find the process of chemistry fascinating. I would not actually attempt these acts on my own and watching NurdRage doing this "primitive" type of chemistry is AWESOME! The explanations of the reactions I find absolutely amazing! I love science and I feel that NurdRage perpetuates my interest in science. Anything that increases this interest I find to be extremely CONSTRUCTIVE.

[@iamme39]

Yeah unlike you I'm the kinda guy that will try this stuff without hesitation, have have on many occasions.. no nuts no glory

[@xXAnthony619Xx]

@@iamme39 Cool stuff dude! For me, my time is just tied up in other things.

[@SpyProductions1]

I've found that if you add more water, the water vaporizes and ends up in the round bottom, and is much more concentrated. When I did this the back flow mixed with the concentrated Hcl and made it less concentrated. My apparatus is a little different pm me if you want to see it.

[@altfarthwind]

i neither do these things explained in the video, nor i'm a chemnist or sth, but these videos are so well made and easy to watch that i see all of them :D

[@rushianokun]

Thank god I did not unsuscribe when you burned those edward figures, this is really the quality I hoped for, keep this going man, its really motivation for me to keep up my grades, clearly knowledge is power!!

[@spamspanker123]

Every DIY video has some dork saying, "You can just buy the stuff!"

[@MrSuednym]

Would regular iodized table salt work for the reaction, or would it be more likely to form hydroiodic acid?

[@ColdFinger]

When you used the Blue PH paper, that kind of brought me back. I haven't used that stuff in ages.

[@kettyca666]

AWESOME ! :D i'm ur fan! I'm a chemistry student and i love ur vids! And you make me research so much! I love it!

[@pushpindersawhney7042]

chemistry experiments are very good

[@daviddanielgraham]

What is the take-off adapter called that you are using to prevent backflow? Thanks in advance, and thanks for the great experiment! :D

[@MK_ultramaxing]

I believe that is a vacuum take off adapter good sir.

[@pyrojig]

Great., I have a tub of sodium bisulfate that needs a use, and a low supply of Hcl. Thanks for reminding me of that simple synth... Much appreciated !

[@TheDrakenZ]

Mister NurdRage, you win on so many levels. You're my scientific genius hero. YOU'RE MY BRUCE WAYNE!

[@ScalperXXl]

What is the name of the separator attachment?

[@yasyasmarangoz3577]

still need help?

[@callmehoo]

I have a question. If the back flow from the beaker to the flask was caused by a small vacuum in the reacting flask, what causes the vacuum in the reacting flask then? I'm just curious.

[@denisdubovik228]

I think it has something to do with gasses shrinking down

[@PyroDesu]

Your chemistry videos = PURE WIN.

[@carambatsr]

Most excellent as always! Thanks for the great video.

[@Wolf-yp2qk]

Could i bubble the HCl gas into less water to get a higher concentration of HCl?

[@user-nd1km9bc6j]

No, because it would release many vapors of HCI gas which could decrease the concentration of the acid.

[@BeepingSheep]

I managed to use only the condensation of water vapor from the heated flask to capture the HCl in a graduated cylinder buried in ice. This is probably much less efficient, but my probe gave a pH of 0.00. So the concentration should be sitting somewhere above 1M.

[@fj7509]

This only works to a certain extent. From experience, HCL fumes above 30% concentration which means it's exceptionally hard to achieve higher concentrations.

[@joshuahunterwilkins4922]

This would go great for my evil laboratory. You know it's evil because I pronounce it "Luh-boar- uh- tor-ee".

[@azazeraazymoto6520]

Your better off making some sulfuric acid. It’s really easy and not very expensive. And a lot more powerful. All you have to do is... buy some of the water downed stuff and boil and repeat for larger quantities.

[@azearaazymoto461]

Wait don’t do that. I’m pretty sure that’ll get you killed. Try looking up proper ways to distill it.

[@carbineZDH1]

i have watched a good many of your videos and i thoroughly enjoy them all very much THANKS

[@explosives14]

I think you are the best chemist on youtube

[@jeffjefferson2676]

The acidpaper part is perfect. But what is it that makes it change color? Could you make a video about that? Thank you!

[@sameethfarhaan5214]

It's a litmus paper.Changes into red when dip it into an acid and changes into blue when we dip into base

[@bonbonpony]

The paper is soaked with litmus, which is a water-soluble mixture of different dyes extracted from lichens, mostly orcein and 7-hydroxyphenoxazone, both having a similar structure of three hexagonal rings joined together, one of them with nitrogen atom, and there's a lot of resonance around these rings due to conjugation. Acids protonate water, and those protons can attach to that nitrogen, causing an avalanche of electron transfers along those conjugated chains of atoms, and changing its aromaticity, which is responsible for the color change, because aromatic rings can react with light at certain wavelengths. If you change the resonance, you change the wavelength of absorbed light, changing the color. And vice versa: if the litmus is mixed with an acid (in the red paper), putting it in a basic solution will detach those protons from nitrogens and restore the resonance structures, turning its color blue.

[@johannesfactotum7677]

The back flow device is called a glass flask aspirator I believe. It prevents unwanted fluids from accidental back flow into the vacuum source. Someone please correct me if I'm wrong.

[@jayhansen5609]

Vacuum trap.

[@hoptail05]

Your videos always blow my mind. SCIENCE!

[@handcannonftw]

Educational, and fun to watch, great video, thanks for making these :)

[@iuriSalvador]

I read in wikipea that you can make sodium bisulfate by reacting sodium chloride(salt) and sulfuric acid at elevated temperature to produce sodium bisulfate and hydrogen chloride gas. So in that experiment you are extrating 3 chemicals at once, right? sodium bisulfate, hydrogen chloride gas and hydrochloric acid. Could you make a video teaching\explaining how to make sodium bisulfate? I guess its not dificult but i'm very noob in chemistry. Thank you.

[@iuriSalvador]

Thank you mate.

[@Smiirffable]

What if i do this in my basement with an open window and a respirator mask designed to filter out hydrogen chloride? Will any of the hydrogen chloride escape to the upper floors? If so what if i do this in my kitchen with a kitchen fume exhaust?

[@Headshotted718]

You can just go outside with a few extension lines... and if you do i would still recommend the mask

[@stephanieprince9463]

Run the gas not Kitty litter.

[@stephanieprince9463]

Into...

[@evilmurderproduction]

i really hope there never comes a day where I need Hydrochloric Acid... great vid by the way

[@Lite963]

Even though some people may not want to buy the adapter, it does make the whole reaction more impressive! :3

[@TheShire26]

You sound like an evil genius (in a good way).

[@HeaanLasai]

What is the backflow prevention piece called? I asked a chemistry student but he didn't remember. Without a search term I can't find one for myself. (Note: I'm not attempting this experiment, but I'm in need of a backflow prevention piece for a different experiment. Forgive my poor English.)

[@ChristopherJones16]

just google chemistry glass threeway

[@Wolf-yp2qk]

It's a type of Gas inlet adapter.

[@HeaanLasai]

Yes, I know that, but without the correct name I can't find it.

[@Wolf-yp2qk]

R Johnson Just type that exact name into ebay and you should find a few, you might be able to make a makeshift version out of pvc pipe also.

[@johnraimondi1811]

You don't necessarily need that. You can control the backwash by directing the pressure away from the vacuum flask with the sodium bicarbonate and sodium chloride. If you keep the vacuum flask really hot and keep the other really cold (in an ice bath) the pressure will too great to allow backwash. You can also increase the rate of spinning IN THE VACCUM FLASK to create more kinetic energy and therefore direct the pressure elsewhere. I know he didn't not have a bar magnet in the vaccum flask, but it would certainly help.

[@XxTrinityInfinityxX]

excellent video as always, wish I had the time and money to give this a shot!

[@vistigioful]

Nice. That sounds badass in a way.

[@ryanledak9349]

Just to say it, since nobody else seemed to be able to answer it... The connecting piece he used on the backflow preventer is some kind of "gas inlet adapter". I found them on ebay if you want one. If you search for "glass inlet adapter both hose connections" it comes up with one that's 24/29. I'm sure you could find one that's 24/40 if you do some searching, but my glassware is all 24/29 Chinese junk, so I got one of those. There, it's settled once and for all. :)

[@ryanledak9349]

There is one that is 24/40 a little further down the search list for the search stated above. Picture has a yellow background. Now you can all get one! XD

[@anodynemathematician4194]

Ryan Ledak Thank you for the information

[@LiborTinka]

Another solution is to use large enough wash bottle or 2-neck flask or 3-neck flask with hose adapters (and one stopper for the 3rd neck). The oldskool way would be to pinch two holes in a rubber stopper and drive two glass tubes through it - then use the stopper on a flask of your choice plus appropriate hoses. However ground glass is preferable as HCl slowly eats up rubber.

[@infinteuniverse]

How do you get rid of your chemical waste?

[@recessiv3]

infinteuniverse Some things are illegal to pour down the drain, but others are ok if you dilute them. I personally get a large bucket that can hold about 10 litres of water and fill it near to the top. After, I just dispose of very minute amounts of chemicals into 9 litres of water, mix well, then pour down the drain if allowed.

[@n0username0n]

You can treat it mate, acids react with bases and vise versa, get them to the neutral PH level of 7, if it contains any metals they will drop out of the solution at that ph and form a salt of the metal from the Acid ( Example : HNO3 + NaOH = NaNO3 + H2O) Then once at 7 Ph, Allow to settle for 48-72 hours and dispose of the clear liquid (Almost Completely Clean H2O) Down the drain, then either dry the metal salt (in this case NaNO3) and keep it for later uses or dispose of in the bin or if its a toxic metal, then a chemical waste company is needed (we have ToxFree here)

[@n0username0n]

Or you can just boil off waste water and be left with your NANO3 for a later use or dispose of (which id say never dispose of as you can get nitric acid back from that) Same with most metal salts One upside to boiling it off, is your left with ALL the Salts and dont have to dump the H2O which will still have small amounts of the salts even after neutralising the solution and letting settle (could even cool to 0 degrees and get more to drop out but again it will still have smaller amounts in the solution)

[@FindingCreatures]

infinteuniverse he pours it’s in a pool full new born turtles. IM JUST KIDDING!

[@jadentonkin466]

straight down the drain bro

[@NurdRage]

@DominicCopeland the one under the ice is just for stirring, the heat isn't turned on. The hot plate for the reaction is set to 250 degrees Celsius.

[@NurdRage]

@Zappyguy111 Yes, those 3 are produced. Although it gets more complicated: as the pH rises from the NaOH the chlorine produced redissolves and you start making NaClO and if you keep going you eventually start making NaClO3 and NaClO4

[@Nitro2030ce]

you know it's not hard to reverse your voice changer...

[@MolecularResearchLab]

That's about as good as saying Vegetables cause cancer. Try harder.

[@azazeraazymoto6520]

No it really is t though. The guy is saying it is absulotely pointless because anyone could reverse it.

[@azazeraazymoto6520]

It may be pointless to get rid of something pointless but it still does something.

[@azearaazymoto461]

Wait who deleted their comment. I can’t remember who I replied to but I definitely replied to someone. Well I guess that person realized they were wrong or had some other reason.

[@cedricproper5256]

There should be a rule of the interwebz to not dox the teacher.

[@jamesgrey13]

Couldn't I just vomit into a beaker?

[@McVidsAndTutorials]

it's a very low concentration and also has different ferments and spit. So yeah. and if you are wondering how low, it's a bit less than 100 times less concentrated, than the one made in this video.

[@jamesgrey13]

McVidsAndTutorials Oh... So much for that idea... XD

[@adrianbornabasic7499]

+Tony James Gilpin lmao

[@garycard1456]

+Tony James Gilpin You could try, but make sure you vacuum filter to remove the organic solids from the mother liquor. Then perform a fractional distillation to concentrate and remove dissolved salts and other crap.

[@jamesgrey13]

Gary Card I think it would be easier just to follow the video!

[@DerpySky]

I never really know what he is talking about because i dont know anything about chemistry, but it's still awesome to look at! :D

[@TheAwkwardBanana]

You can make so many cool bongs with your glass pieces.

[@SHADOW5383]

Thanks alot! Coming up next: "How I murdered my wife and they never found the body."

[@bridgesgijsbers6349]

Didn't think I was watching a sketchy video until I heard the voice...

[@ClownWhisper]

This isnt a sketchy video this dude is a real chemist.

[@bridgesgijsbers6349]

Not saying it isn't legit, but once I heard the voice it made me think 'I might end up on some kind of watch list for viewing this video.'

[@ClownWhisper]

lol I hear ya No I think that the process is legal as long as you can do it. Stuff starts to be illegal in this area when you get your hands on chemicals that are not legal to have in an uncontrolled unlicensed environment I am about ready to do this myself as I need about 100ml of the stuff. It actually makes more sense for me to do this than buy the stuff.. I only need very small amounts for a reaction with graphite. and I wont use more for months

[@azazeraazymoto6520]

What are you doing exactly

[@bonbonpony]

Everything is legal when there's no police around.

[@chrisbusenkell]

another awesome video, thank you much. i love the backhanded commentary, you think like i do, unfortunately this, more often than not requires us to explain things to some people, if we've come to the opinion that something complex can be understood by someone else and it's worthwhile, of course demonstrations are always a much better way of conveying knowledge and demonstrations without any kind of soundtrack really suck...so we do our best...our minds are usually way ahead of our hands and our mouths...make sure the tv audience hasn't lost faith via honesty, being blunt, sometimes funny, always dry...

[@sethmath2778]

Thanks, been looking for this for ages 🙏

[@Samuel_by]

If you are looking for a different of mushroom I have a guy just for you he deals on all those things and some hard stuff like LSD,MDMA,Wock lean,Psychedelic mushrooms,Xanax,THC,syrup,Mushroom,DMT,Psychedelic,Psilocybin,Microdosing and Anxiety and depression and more 🤯🤯🤯

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[@Samuel_by]

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[@cadigalwilma7049]

Its not dangerous ?

[@TheDetonadoBR]

Cadigal Wilma No , it's dangerous.

[@cadigalwilma7049]

Thanks so much

[@ministerofpropogandaii5718]

i lol'd

[@markkosh4254]

It's very dangerous its acid its high contested

[@markkosh4254]

Very dangerous

[@MateusAntonioBittencourt]

StreetFunk You clearly doesn't know anything about chemistry. The highest concentration of HCl is 38%, more than 40% is almost impossible to get. And you even say that a 70-80% concentration of HCl is a "fairly poor acid". Are you insane? This is basic chemistry. Everyone who ever been in a lab knows this.

[@bluke85]

proskillz89 en.wikipedia.org/wiki/Gastric_acid Mateus Antonio Bittencourt don't confuse purity and concentration. Homemade HCl can be 38% concentrated (so called "fuming"), but still can have some impurities, therefore lowering the purity of the solution.

[@MateusAntonioBittencourt]

bluke85 and when did I confuse purity and concentration?

[@bluke85]

Mateus Antonio Bittencourt StreetFunk said "This method only creates a fairly poor acid maybe 70-80% purity."

[@MateusAntonioBittencourt]

bluke85 Actually StreetFunk said "This method only creates a fairly poor acid maybe 70-80% purity. You would have to go through numerous distillations to get it to a concentration where it isn't safe to be within your house" It was StreetFunk who did confused purity and concentration if you understand the context of what he said. He was talking about a "pure" solution of 70% HCl, and called a "fairly poor acid", if he was talking really about purity why he would call it "fairly poor acid" if is the concentration that matters?

[@bluke85]

Mateus Antonio Bittencourt maybe he intended poor as poor quality. Ah, who cares.

[@chemist97ful]

NURDRAGE, YOU ARE THE BEST!!!!

[@862ocelot]

You back to chemistry!!! Thats good!!!

[@NurdRage]

@Almontmarine so how can you say that i "forgot" to test for the acid when you admit i did indeed test it?

[@akhilthechemist]

You should use an inverted funnel to dissolve the gas. It would prevent back suction And give the gas a large surface area to dissolve

[@shadowblade145]

A perfect addition to a cocktail =)

[@siddharth-wy2kp]

Shut the f up

[@NurdRage]

@ignilc If the round bottom and the gas generator are closed off so the air/gas can't escape, how can an appreciable siphon be created before the internal pressure would stop any further flow?

[@MrEhud77]

dude you really need to put all this stuff in a book.

[@thoundercat97]

dude i got an a on my science project because of you thanks man

[@walterwhite5317]

Dude, you're awesome!

[@blackbirght]

Its the same in Bulgaria you can buy anything you can think of from the store with no restrictions but he is right this is about learning

[@SuperBabi1989]

gr8 video....u can use hcl....to clean stained floors n even sanitation wares....awesome vid nurdrage rocks..

[@qwertzuiopli]

you have the deepest voice i ever heard

[@NurdRage]

absolutely. there are many methods for stopping back flow. By all means use whatever you have on hand. ^_^

[@PumaM90]

tis so cool! i gotts tri this after skool!!

[@rxguemusic8792]

I’m definitely on a list now

[@OriginalUnknown2]

you know the feeling when ur eating something crunchy, and trying to watch a video ur interested in, but u cant hear it? XD

[@NOLIMIT69NOLIMIT2000]

Another great video. Thanks

[@purplemutantas]

The yellow clip is a keck clip. They are used to secure bits of lab glass that use ground glass joints. They come in different colors depending on the size. The yellow clips are for 14/20 size joints. The ones I have are green for 24/40 joints.

[@sum41foreverown]

I like you, im learning xd. thanks this is a very interesting vid (just like the other vids on your channel) I do (as moost other's probably do) realy appreaciate you taking the time to make your instructuable vids that mekes the interest for chemistry grow. I think that most people learn thatchemistry is booring and stuff from dull experiments in elementary school.

[@prachij.6382]

Thank you, its informative 👏🏼🙏🏼

[@NurdRage]

@omegahunter9 to be honest, actually DID get my sodium bisulfate from home-depot, :) its in the plumbing section. for some reason they didn't have hydrochloric acid like i was expecting, but had sodium bisulfate. Ah well, as you can see from the video that didn't stop me from getting HCl :)

[@Berghiker]

I make HCL very sucessfully by mixing equal proportions of sodium hydrogen sulphate and sodium chloride. I heat up the mixed powders and bubble the gas directly into a flask of distilled water. I never get backflow because I watch it the whole time until the mixture is not producing gas anymore then I pull the tube out the water. The heat is also very high all the time.

[@paulwheat1623]

@NurdRage In the US, Home Depot usually has HCl in the paint solvent section under the name of Muriatic Acid. Generally used to clean brick, pavers, etc.

[@NurdRage]

@mrf0lky mix together dilute solutions of sulfuric acid with excess ammonia and allow to evaporate.

[@purplemutantas]

@82Caver I am thinking of the part you are thinking of. It's a glass vacuum adapter. The part on the side where he sticks the hose indicates that it's used for vacuum applications. So I did a google image search for 'glass vacuum adapter".

[@bobwerner6512]

Hi very cool videos I have been watching many. Do you have any plans for making a fume hood. I am interested in doing some rock assaying and mostly the platinum metals. Again thanks for doing this very informative

[@NurdRage]

@Almontmarine did you miss the part with the pH meter and the pH paper? ;)

[@eclectichoosier5474]

I tried this the other day, with a different setup, and got a surprise. I used a short-path distillation setup into a 1000mL 2neck RBF submerged in an ice bath. (Because why not?) The other neck had a gas adapter that went to a bubbler in a tube in an ice bath. After a short time, the bubbler stopped bubbling entirely. There was no blockage - the gas adapter had a stopper that would have popped out easily enough - and water kept distilling over to the iced flask, so I let it go until I figured the reaction was complete. When I tested the tube water, the pH was ~7, but when I unstoppered the iced flask, I could smell the HCl immediately. The water in there tested around 1 with my cheap Chinese pH paper. I haven't had a chance to titrate it yet, but I've used it for a few things, and it seems pretty strong! I'm guessing the HCl absorbed into the distilled water pretty efficiently as it beaded and cooled on the walls of the flask. I'm assuming that the initial bubbling was just some displacement of the air in the system. I did notice that it started getting some back-flow as soon as I removed the heat. It wasn't violent, though, and I disconnected the hose before it reached the flask. I will definitely be using this recipe/setup again! Thanks for the great videos!

[@6oJ6e]

What is the highest molarity of HCl you use? What would you consider concentrated HCl? Isn't HCl azeotropically only able to be concentrated to around 35%

[@NurdRage]

@Fentanyl3 I try not to do stuff already on youtube. (type "make nitric acid" into youtube search)

[@HeaanLasai]

Dear NurdRage, I'm amazed by all the knowledge you give us with your videos, to me you are unlocking a new level of understanding. End off topic. Question  I have a second question for you; how do you concentrate HCl and, and when HCl is solved in water, what is the optimal (mass) percentage HCl vsH2O? Appreciate any help! Sincerely yours.

[@Merdam9]

Tomorrow is my first day on studies of biochemistry :D Can't wait! Wish me luck ;)

[@omsingharjit]

Is ot also possible to make hcl by electrolysis of Nacl because cl and h2 are produced by that an we make hcl by combining both gases in same water container ?🤔

[@HiloFarmersMarket]

btw i love your videos, interesting educational, the only problem is, your not my chemistry teacher :3, but besides that, id have to say ur one of the most interesting channels to watch on youtube

[@ithink4994]

you are best on youtube

[@rayhoodoo847]

wow this was awesome man

[@EverettCharms]

I'm so thankful for this video. Could you tell me the name of the attachment you are using in your round bottom flask, Please? (I'm not attempting this, im just rebuilding it for television)

[@zunnyinternational]

This video was really helpful! I finally got to lose some dead weight!