Extracting Pure Silicon Dioxide from Dirt

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  • Опубліковано 25 чер 2024
  • In this video I make some pure silicon dioxide from dirt while struggling to figure out how to calculate proportions properly.
    If you liked the video please consider liking and subscribing to my channel :)
    If you want to support my work here's my patreon - / amateurchemistry
    Also, excuse me for my poor speaking, in case that you don't understand something there are always subtitles made by me.
    Instagram - / amateurchem. .
    TikTok - / amateur.chemi. .
    0:00 Intro
    1:10 Collecting the Dirt
    2:00 Refining the Dirt
    2:50 Turning Dirt into Pure Sand
    6:10 Extracting Silicon Dioxide from Dirt
    13:05 Outro
    #chemistry
    #experiment
    #beautiful
    #diy

КОМЕНТАРІ • 167

  • @qm3ster
    @qm3ster 11 місяців тому +218

    2:13 Dry the wets (or they won't sieve)
    3:07 Wet the drys (4 times)
    3:48 Dry the wets
    4:16 Wet the drys
    5:16 Semidry the wets
    5:22 Wet the wets
    5:36 Dry the wets
    5:49 Superdry the wets
    7:44 Superdry the superdrys until they're wet (?)
    8:35 Wet the drys
    9:38 Wet the wets
    10:54 Dry the wets
    11:09 Wet the drys
    11:12 Dry the wets
    ...

  • @RussellTeapot
    @RussellTeapot 11 місяців тому +10

    2:34 "... .999 Laboratory-grade analytical dirt" ok, I'm subscribing

  • @Kevin-cq5dg
    @Kevin-cq5dg 11 місяців тому +18

    A chemist touching grass? Asteroid incoming...😂

  • @GodlikeIridium
    @GodlikeIridium 11 місяців тому +73

    Analytical grade dirt 😂 You are funny. And brave! I wouldn't dare to touch grass, especially without PSE! 😮
    Nice video 👌
    Edit: Fun fact: That's pretty much what NIST Standards are. Standard products, but maximally homogeneous and tested a huge number of times for statistical use for analytical labs, to compare results to see how accurate they are. So you can buy a jar of NIST peanut butter... For 100x the usual price. But it's fair, for use as standard for fatty acid analysis for example.

  • @PixlRainbow
    @PixlRainbow 11 місяців тому +37

    You probably know this already, but the ground is made up of multiple layers. The surface layer, topsoil, is rich in organic material. You probably want to dig a bit deeper, or find a patch of eroded soil, to get some dirt that doesn't start out with nearly as much organic impurities.

    • @gaburieruR
      @gaburieruR 11 місяців тому +12

      Yes, digging down until the soil is lighter than the top is good, just mineral soil, almost no organic junk, a good place to pick up too is on river beds, the water already do the work on washing it up.

    • @MGSLurmey
      @MGSLurmey 10 місяців тому +6

      Even better, just go down to a beach to gather your dirt there and- oh.
      The point is to extract the silicon dioxide from regular, dirty, topsoil. Filtering off the organic material is part of the journey.

    • @gaburieruR
      @gaburieruR 10 місяців тому +2

      @@MGSLurmey eh, dirt in general have a lot of non organic contaminants, like metal oxides, who are tricky to remove from the silicon dioxide, but in a way, the organic junk add a bit of fun for the extraction (and beach sand has contaminants too)

  • @Delta7Smith
    @Delta7Smith 11 місяців тому +2

    I like how you're honest about personal failures and how you resolved those.

  • @Metal_Master_YT
    @Metal_Master_YT 10 місяців тому +3

    there is a way to avoid the sodium hydroxide step, which involves either crushing the sand to a very fine powder, or finding very fine sand. the particle size simply needs to be smaller than the crystal size of the minerals in the rock that the sand came from, this means that every individual mineral is exposed, and can be reacted with. and the only thing that will remain is the silicon dioxide grains, which are already silicon dioxide, which means no sodium hydroxide necessary.

  • @Leadvest
    @Leadvest 11 місяців тому +2

    1:20-1:45 This is groundbreaking content!

  • @sebastianmolas9347
    @sebastianmolas9347 11 місяців тому +17

    Im amazed of your Channel, I've got only few chemistry practices in my biochem eng undergrad, therefore I have to educate myself with Channels like yours, nile red, that chemist, etc.
    Thank you for contributing to my learning,

  • @chemistry-experiments78
    @chemistry-experiments78 11 місяців тому +18

    Nice! Your videos are like NileRed's with those transformations like eggs to chloroform.

  • @ingenitussapientia
    @ingenitussapientia 11 місяців тому +1

    Privileged to see this rare event, surely you are a pioneer and many chemists will now work hard to aspire to also touch grass.

  • @ChemicalEuphoria
    @ChemicalEuphoria 11 місяців тому +6

    awesome video!
    just a few useful tips: it will be easeier to melt the hydroxide first and then add the raw SiO2, then also its quite bad for the glass frit to filter the silicate-silicon dioxide-hydroxide mix because there is some hydroxide left so i'd use a buchner instead.

  • @gocrazy432
    @gocrazy432 11 місяців тому +8

    I always wanted to process dirt into chemistry magic

    • @Coastal_Cruzer
      @Coastal_Cruzer 10 місяців тому

      The raw masculine urge to process resources

  • @ixrer
    @ixrer 11 місяців тому +2

    At the beginning with the music, I thought I'd somehow ended up on a Dankpods video lol. But I adore your chemistry, gonna toss a subscribe

    • @j.kakaofanatiker
      @j.kakaofanatiker 11 місяців тому

      I wish I had huh duh six hundos to listen to that.

  • @dominiklukacs7677
    @dominiklukacs7677 10 місяців тому +5

    so silicon dioxide is dirtn't

  • @yogurtColombiano
    @yogurtColombiano 11 місяців тому +2

    Such an amazing channel, thanks for the video!

  • @StanleyMec
    @StanleyMec 11 місяців тому

    Me watching this vid:
    "Huh I've never seen this guy yet. Good content!"
    "Damn god quality"
    Seeing PLN in the patreon in outro:
    "HE'S POLISH?!? Jakim cudem znalazłem dobry kontent z chemii u Polaka?!?!!"
    You're one of a kind I guess :)

    • @matix1818
      @matix1818 10 місяців тому

      też o tym pomyślałam gdy zobaczyłem na pompie polszczyznę

  • @IR2D2I
    @IR2D2I 11 місяців тому +5

    @Amateur.Chemistry thank you for the thanks at the end of the video :) I'm looking forward to your next videos, especially the spicy ones ;) the first one was great... Alfred N would be proud of you :)

  • @qvatch
    @qvatch 11 місяців тому +1

    for our soil labs we always started by putting the sample through a furnace to destroy any organics. Also lets you get a nice dry weight

  • @kennethjanczak4900
    @kennethjanczak4900 11 місяців тому

    You got my attention, this was interesting..
    Thanks for taking the time to make the video and share it.

  • @duncanfox7871
    @duncanfox7871 11 місяців тому +6

    Your filming is actually really high quality. I would like to reward you for the value you've given me and encourage you to keep going, do you accept donations? Even if it's small

    • @Amateur.Chemistry
      @Amateur.Chemistry  11 місяців тому +5

      I am glad that you like my content! I don't have something like paypal for one time donations, but I have Patreon, and the first tier is $3 so if you want you can support me this way.

    • @SomeoneProbably-cf9es
      @SomeoneProbably-cf9es 10 місяців тому

      just sign up and emedietly stop
      @@Amateur.Chemistry

  • @PotooBurd
    @PotooBurd 10 місяців тому

    Love your work! Comenting for the algorithm 🌻

  • @kid_missive
    @kid_missive 10 місяців тому

    why is this so satisfying? Maybe because I did not expect you to be able to remove all the soil coloured components so easily.

  • @smithsosian1671
    @smithsosian1671 5 місяців тому

    i swear your dad is a wizard

  • @Embassy_of_Jupiter
    @Embassy_of_Jupiter 11 місяців тому +2

    my man is playing Minecraft skyblock in real life

  • @zebusaqua4415
    @zebusaqua4415 11 місяців тому

    Nilered be slacking. Keep up the good work!

  • @Alnidru
    @Alnidru 11 місяців тому +2

    I just found you, but you edition is really clean and nice to watch, and the content is awesome

  • @simplydarkhalf3974
    @simplydarkhalf3974 9 місяців тому

    Love the boots 1:52

  • @HappBeeH
    @HappBeeH 9 місяців тому

    Touching the grass cracked me up

  • @R-Tex.
    @R-Tex. 11 місяців тому +1

    Shout out to dads fixing stuff!

  • @photonik-luminescence
    @photonik-luminescence 10 місяців тому +1

    Pleas keep on doing such simple experiments. You use stuff that i can actually replicate and many other ! Pleas keep finding cool recepies to do with regular-ish compunds !

  • @laharl2k
    @laharl2k 11 місяців тому +2

    you should try electrolysis on whatever the acid got out of the dirt to see which metals it had :P

    • @gaburieruR
      @gaburieruR 11 місяців тому

      It'll mostly get alkaline and group two metals, like calcium, sodium and potassium, and maybe a bit of transition ones like iron... But unless he get it to a specialized analyzer, we would see just a mess of combined metals, hydroxides and oxides.

  • @spiderdude2099
    @spiderdude2099 10 місяців тому

    Very brave of you to touch grass, I could never. My lab efficiency would suffer

  • @THYZOID
    @THYZOID 11 місяців тому +2

    Interesting project!

  • @GodlikeIridium
    @GodlikeIridium 11 місяців тому +1

    4:44 Ahh, the poor mans reflux condenser! Love it. And use it too, despite working in a professional lab with lots of different reflux condensers. But time is money 👌

  • @zekiz774
    @zekiz774 11 місяців тому +1

    I find it so hilarious that you're basically making stone from dirt

  • @Metal_Master_YT
    @Metal_Master_YT 10 місяців тому

    Dude, I've always thought that this might be possible if only I had the resources ad tools to do it xD and you proved it!

  • @nedisawegoyogya
    @nedisawegoyogya 11 місяців тому

    I like that you make something so mundane as dirt to be something many people interested in

    • @nedisawegoyogya
      @nedisawegoyogya 11 місяців тому

      Hey here's a challenge: make a geopolymer

  • @1O3683e
    @1O3683e 10 місяців тому

    Nice video! I remember trying and failing to automate the opposite process in Minecraft a decade ago

  • @weemanling
    @weemanling 9 місяців тому

    I have never seen dirt turned until sand. That was cool as fuck.

  • @Taras195
    @Taras195 10 місяців тому

    You could hat treat the soil as a first step, to get rid of organic materials faster/easier.
    Awesome vid, you've got a new subscriber!

  • @anisbidran2733
    @anisbidran2733 11 місяців тому

    I love your channel , every thing. Speachily your funny humor jokes 2:36

  • @BunnyOfChaos
    @BunnyOfChaos 11 місяців тому +3

    Czekam na materiał o ciekawych Aminach :P

  • @scottbruner9266
    @scottbruner9266 11 місяців тому

    “.999 fine, laboratory grade, analytical dirt….”
    Can’t stop laughing…..

  • @R-Tex.
    @R-Tex. 11 місяців тому +1

    Make TLC plates with it!

  • @ralfvk.4571
    @ralfvk.4571 11 місяців тому

    Great Video. I also would like to see, what we can get out of the first HCl-wash. For sure, there are Elements like Iron and some more inside.
    The next step we need, is to produce our own HCl and H2S04 from the stuff, we find in nature. 🙂

  • @AppliedCryogenics
    @AppliedCryogenics 15 днів тому

    Some hot piranha solution would have removed all the organic bits prior to the conversion to silicate. Your sand would have been almost snow-white and have none of those black bits.

  • @easyBob100
    @easyBob100 11 місяців тому

    When you say "dirt" you remind me of Ze Frank saying "birds" :D

  • @ElBoboMan
    @ElBoboMan 10 місяців тому +1

    This looks like something you'd do in a modded minecraft skyblock

    • @LuaanTi
      @LuaanTi 10 місяців тому

      You'll find it in modded Factorio :P Even fairly hardcore minecraft modpacks, like GTNH, still rely a lot on magical electrolysers and the like which give you pure products for magic. Though with GTNH, fewer and fewer of those remain with each update, replaced with more realistic processes. I'm actually working on a game where separating things is a major part of any refining and you're always working with complex materials rather than pure molecules/elements; I'm sure there's around 100 players in the world who are really going to enjoy that ("Pyanodon's mods are _way_ too simplified!") :D

  • @LiborTinka
    @LiborTinka 9 місяців тому

    You can make water glass or silica gel - there are many 'recipes' in various chemistry textbooks (e.g. Armarego, Brauer, Vogel). It's relatively easy to make and much cheaper than professional chromatographic silica gels from chem suppliers. Various types of aluminas are also worth of exploring.

  • @djbojlerszaggato9602
    @djbojlerszaggato9602 10 місяців тому

    What kind of vacuum pump you using? I'm currently looking for one and i think this will be great.

  • @Embassy_of_Jupiter
    @Embassy_of_Jupiter 11 місяців тому

    Not sure if it's up your alley, but for a video you could extract Lactucarium from wild lettuce.
    It literally grows everywhere. Now that you touched some grass, it should be easy for you to find.

  • @Pseud0nymTXT
    @Pseud0nymTXT 11 місяців тому

    I did the sodium silicate reaction in water and it seemed to work fine, just took a while, I did contaminate the solution with (i think) chromium ions after I couldn't find glass filters and tried to use stainless steel wool to filter off undissolved debris (like bugs) after I realised why my filter paper kept self destructing

  • @Metal_Master_YT
    @Metal_Master_YT 10 місяців тому

    I will also mention that if you simply make some piranha solution, it will do pretty much every step for you all at the same time, except for removing the iron impurities. there may also be titanium and feldspar impurities.

  • @vnuendru1
    @vnuendru1 2 місяці тому

    Do you have any thoughts on what particle size of final product did you get?

  • @drewniakma3063
    @drewniakma3063 11 місяців тому +5

    Keep it up 😍👆👆👆👆👆

  • @hunnybunnysheavymetalmusic6542
    @hunnybunnysheavymetalmusic6542 11 місяців тому

    HEH!!!
    WHERE I LIVE, SAND IS MORE OF A PROBLEM THAN A SOLUTION!!!

  • @TheDuckofDoom.
    @TheDuckofDoom. 10 місяців тому

    Depending on the crystaline structure silicon dioxide dust can be very damaging to breath. The amorphous structure is not terrible, but fully crystaline silica dust is very hazardous.

  • @diob.b.brando9202
    @diob.b.brando9202 11 місяців тому +4

    To get SiO2 you can add H2SO4 to liquid glass which is Na2SiO3 disolved in water

  • @r0cketplumber
    @r0cketplumber 11 місяців тому +1

    Heh. I have plenty of sand in my yard with little organic matter- but in the Space Coast of Florida, most of the sand is just weathered coral and thus mostly calcium carbonate. I'd have to go a few hundred miles to find actual silicate sand.

  • @qm3ster
    @qm3ster 11 місяців тому +1

    Can I use this for baking?

  • @user-us4uw1pb3e
    @user-us4uw1pb3e 11 місяців тому

    can sulfuric acid be used in place of the hcl?

  • @cameronhunt5967
    @cameronhunt5967 11 місяців тому

    If I had access to a furnaceand was doing the same project, I think I would have put the dirt in a furnace first, maybe with an oxidizer to burn off the organic material.
    Would that have made any of the next steps easier or require less caustic chemicals for cleaning?

  • @rocketpadgamer
    @rocketpadgamer 11 місяців тому

    5:57 average sand is actually grey and the dust is a lot larger

  • @Par_and_syv_lovers56
    @Par_and_syv_lovers56 11 місяців тому

    “Jesse, we need to cook”

  • @dang-x3n0t1ct
    @dang-x3n0t1ct 11 місяців тому +1

    No way, Dank Pod music?

  • @the_real_aristotle
    @the_real_aristotle 8 місяців тому

    you gotta try to make ur own hcl and h2so4

  • @JKKnudsen
    @JKKnudsen 11 місяців тому +1

    Sooo, you should have used some water, as a flux, to get the reaction going in the can.
    What you where left with was still sodium hydroxide and silicon dioxide .
    What dissolved was the sodium hydroxide, and when you added sulfuric acid you made sodium sulfate. The solution already being saturated, it came out of solution immediately. And at no point later did you add enough water to dissolve more than ~50g of sodium sulfate.
    So if there was 66g before you added 150ml water, there would still be 16g sodium sulfate undissolved in the solution.
    Just think about it, granular sand has about 160g/100ml, but after the "reaction" you still had almost 200ml of sand, where is the product coming from?
    If you stir all your product in a 500ml beaker of water, how much remains undissolved?

  • @ruediix
    @ruediix 10 місяців тому

    If you're not part of the solution you are part of the precipitate.
    However, you wanted the precipitate for the washing stage.

  • @victorgonzalez-lf7le
    @victorgonzalez-lf7le 9 місяців тому

    How are you sure that you removed Al2O3? Since it reacts just like SiO2

  • @rajkomarcerta-vp5ig
    @rajkomarcerta-vp5ig 11 місяців тому

    What size do you think that the silica is ?

  • @edgeeffect
    @edgeeffect 10 місяців тому

    "technical grade dirt" made me laugh.
    I find cut-down butane cylinders make excellent "cans" for chemical reactions and melting low-melting-point metals.

  • @drasiella
    @drasiella 11 місяців тому

    The hurrdurr six hundos music

  • @Aligartornator13
    @Aligartornator13 11 місяців тому +2

    You have the fanciest aluminium foil in all of youtube!

  • @railfan_3371
    @railfan_3371 11 місяців тому

    Chemistry be like "add water, filter, remove water, filter, heat a bunch, filter, add water, filter, remove water, filter, add some acid, filter, neutralise acid, filter, add water, filter, remove water, filter"

    • @LuaanTi
      @LuaanTi 10 місяців тому

      It's funny, because it's a part that's entirely ignored in pretty much all games that include chemistry - you always have magical centrifuges and electrolysers that effortlessly separate stuff out. How do you get aluminium from clay? Just run it through an electrolyser! Nicely separated 100% pure batches of all the individual atoms. Real-life chemists would kill for magic machines like that :D How does electrolysing clay even work? Well... shut up, that's how! :D

  • @unlockeduk
    @unlockeduk 11 місяців тому +3

    not outside nooo im not doing it

  • @1495978707
    @1495978707 10 місяців тому

    Aren’t the other oxides present, like aluminum, magnesium, iron, etc oxides going to come over as well?

  • @silizimon1293
    @silizimon1293 11 місяців тому +6

    You could also try to do column chromatography with your silica. It might not be the right particle size but it would be really cool if it worked.

  • @salihakdag6371
    @salihakdag6371 11 місяців тому

    👍👍

  • @guardiangamer2695
    @guardiangamer2695 11 місяців тому +1

    Why you didn't just burn your technical grade dirt? It is like half of the work eliminated by just burning it

  • @experimental_chemistry
    @experimental_chemistry 11 місяців тому +1

    Better do not use a sintered glass funnel for filtering silicic acid because it might block its pores forever... 😲

  • @fasted8468
    @fasted8468 11 місяців тому

    Silicon dioxide is mentioned in genesis 2, along with gold, and aromatic plants.
    "The gold of that land is good, there is onyx and aromatic plants there also"
    It's like they wanted us to build computers.

    • @gaburieruR
      @gaburieruR 11 місяців тому +3

      Well, mentioning almost any rock you are mentioning silicon dioxide, it's the most common compound in the planet by mass...

    • @fasted8468
      @fasted8468 11 місяців тому

      @@gaburieruR good point. Makes we wonder why would they mention that the most common mineral on earth? Maybe something special about black onyx.

  • @vantrez1070
    @vantrez1070 10 місяців тому

    3:52 Dobrze wiedzieć

  • @unnamed8395
    @unnamed8395 11 місяців тому +1

    i am da 2nd patreon :)

  • @rexhavoc5643
    @rexhavoc5643 10 місяців тому

    Could you sum the energy inputs needed to convert clean "sand" (not dirt, such as a nice mineable deposit) into silicon dioxide, in optimal conditions? Include the energy production of the reagents. Then, the energy needed to convert SiO2 into metalloid silicon - for use in building solar cells. I suspect a solar cell will never return more energy than was needed to produce it.

  • @derchromebacher4366
    @derchromebacher4366 11 місяців тому +2

    It's the tactical chemist boots for me.
    And liking your own video. Sigma behaviour😌👌

  • @CShand
    @CShand 11 місяців тому

    Please do Lithium from Mica

  • @sheerazhanifgul
    @sheerazhanifgul 5 місяців тому

    Is it hydrophobic?

  • @nekomasteryoutube3232
    @nekomasteryoutube3232 11 місяців тому

    TBH I never thought of dirt being a mix of sand and other stuff, it just always seemed like its own thing.
    To see the result after cleaning it looks like the sand I see at the lake shore beach in my city

  • @allangibson8494
    @allangibson8494 10 місяців тому

    Most Glass isn’t silicon dioxide - it is mix of sodium silicate and calcium silicate. Lenses are often Calcium Fluoride (no silicon at all).
    Glass is actually a state of matter…

  • @Metal_Master_YT
    @Metal_Master_YT 10 місяців тому

    oh my gosh I hate that green iron chloride, it comes with every sample of sand/dirt/clay that you put into this reaction xD

  • @faq_is_love
    @faq_is_love 10 місяців тому

    Aluminium oxide is as common as silicon oxide in dirt. And no, it doesn't dissolve in hydrochloric acid because it's embedded inside the crystals of sand. It reacts with sodium hydroxide and precipitates when adding acid the same as silicon oxide, so it does come over in the end product.
    But even ignoring that, you can see by the colour of the end product, that it is not pure in any sense and is contaminated with iron oxide and other contaminants. I expected more purification steps after that.

  • @tjeepert9782
    @tjeepert9782 11 місяців тому

    6:19 I thought silicon can't form double bonds? Can this exist because there is a constant equilibrium where the double bond is between the 3 oxygens? curious.

    • @LuaanTi
      @LuaanTi 10 місяців тому

      It really avoids forming double bonds, which is where we get the wild variety of silicate minerals. Quartz does not have double bonds - each silicon atom is actually covalently bonded to _four_ oxygen atoms (but each of them is shared with another silicon atom).
      But molecular silicon dioxide does exist. And it indeed has two double bonds, and it is linear just like carbon dioxide.
      Of course, that's not what was produced here; that would be your typical SiO4 (4+). But I don't think it's all that wrong to draw molecular silicon dioxide - it does _form_ , it's just that it polymerises very easily for obvious reasons. The double bond rule is not a rule; more like a... guideline. You'll find there are many molecules where silicon forms double bonds, and they aren't _unstable_ , really - they just polymerise easily and lose those double bonds.

  • @vidyagaems4063
    @vidyagaems4063 11 місяців тому

    I don't know much about chemistry, but wouldn't adding hydrogen peroxide in the hydrochloric acid wash step help? Shouldn't it burn some of the carbon, so that you don't have to filter so much?

  • @littleh4xx0r
    @littleh4xx0r 11 місяців тому +1

    quite nothing like 5N dirt pA

  • @nunyabisnass1141
    @nunyabisnass1141 11 місяців тому

    ...i was thinking, you could have burned off the majority of the organic materials and washed the remaining salts away with water. The acid wash at this point would ne optional, but probably not necessary unless there was some really wierd contamination.

  • @swoonerlg
    @swoonerlg 10 місяців тому

    I dont understand ... what is grass ,outside, im soo confuse

  • @camj4631
    @camj4631 10 місяців тому

    I would never ever put NaOH through your sintered funnel!

  • @bilbo_gamers6417
    @bilbo_gamers6417 11 місяців тому

    awesome video! would it be possible to make a video about extracting the pure clay minerals, like kaolin and serpentinite, or at least removing the metallic impurities from a good quality reddish clay? Apparently oxalic or citric acid is good at dissolving metal impurities from clay. I've wanted to know if this was possible, so I could make my own crucibles without having to order in a bunch of stuff. the big thing i worry about if you were to try and refine clay minerals is that i feel like they're more delicate than just normal silicon dioxide, and using acid and heat might damage them and weaken them somehow.
    A well made kaolinite ceramic crucible with pure silicon dioxide as grog can withstand the temperature at which pure iron or platinum would melt. And crucibles for that sort of work are a pain to get.

    • @Amateur.Chemistry
      @Amateur.Chemistry  11 місяців тому

      Thanks! I could make a video about extracting some minerals form clay, and making some elemental aluminum but as of now I have a ton of other thing planned, but maybe in the future I will find some time :)

    • @bilbo_gamers6417
      @bilbo_gamers6417 11 місяців тому

      @@Amateur.Chemistry lol making aluminium is a tall order, i wouldn't recommend it unless you really wanted to do it. thanks for replying :)

  • @ricardosefa4186
    @ricardosefa4186 11 місяців тому +1

    Can you use hcl instead of sulfuric acid?