100 Comments

  1. You always remind me why I liked chemistry growing up. It was good to see this video actually show up on my notifications and recommendations after some of the issues YouTube has been giving you. Hopefully they've fixed the issue and I enjoy learning how to do these reactions, even if I don't have a lab to put the knowledge to use.

  2. perhaps there is a way to bubble air through the solution, not just expose the surface, to react it faster, or perhaps bubbling both air and sulphur dioxide, to run the process, but the when it comes to harvesting, and reconstituting. The solution have a "faster" reaction to speed up those slow parts of the process

  3. You seem to think we can just buy acid, not all of us have that access to sellers who will sell to private individuals, and that might be a good thing, since these can be used to make bombs and everything. Still annoying you have to make your own or find it, car batteries are my main source of sulphuric acid but I always brick myself when distilling it.

  4. Please tell me if this is realistic and if you can do it, (because it involves very toxic mercury salts), use a soluble mercury salt that has an aluminium soluble counterpart Mercury Chloride is perfect, do a solution any concentration over 5%, if you put the aluminium the mercury will be reduced and the aluminium will appear to be melting. It is a very toxic chemistry trick that seems like Gallium but the aluminum doesn’t melt until 600 C at 1 atmosphere

  5. Hello I have made silver nitrate from pure silver pieces and nitric acid. Q: How can nitrates be purified after that? For information I use it in spraying nickel-chrome water. And you very much

  6. Would adding hydrogen peroxide (maybe even the drug store 3% stuff) instead of air be more effective at regenerating the copper chloride? Or would the excess water cause problems?

  7. You mentioned it could be altered into a continuous process, with my particular blend of hobbies this makes me wonder if the process could not be automated? The very long reaction times are much less a concern, it seems to me, if the reaction can run unattended in a box behind the shed. Just a thought.

  8. If you used pure electrolytically generated oxygen rather than air would that speed up the process? Also when clearing the filter and adding back the HCl, why not just back wash the filter with the HCl? Anyway thanks for sharing, any process that uses catalysts is interesting .

  9. Still not getting your videos in my subscription feed, I filed a ticket with YT when you made the video asking us to if we had an issue.

  10. If you electrolyzed sulfuric acid to generate caro's acid which is h2so4+h2o2, then you could bubble in more so2 gas right?

  11. man NR got really nihilistic in this one

    Maybe to speed up the process of oxidation from cucl2 to cucl you could use an oxidizing agent like peroxide?

  12. Why not do the hydrogen peroxide method? Bubble SO2 gas through H2O2 and H2SO4 will be generated with virtually no byproducts or contaminants.

  13. Is this the third time I'm watching? Yes! Am I a little nuts for doing so? Absolutely! Do I learn something new each time? Of course!

  14. I wonder if one of those little ozone producing air purifiers could be used to make ozone to bubble through the solution. They don't make much, but it seems like it should react more rapidly (assuming ozone would work in this process and that it doesn't just immediately convert dissolved SO2 into sulfuric acid.)

  15. Just to check with anyone who knows, when getting a lab glass starter set, is 24/40 grinding the most common? It seems like the laboy stuff is all 24/40. Its a pretty steep investment, though. (for me)

  16. Can you use Iron (III) chloride instead of Copper (II) chloride? Perhaps iron(III) chloride could be used together with copper (II) chloride to catalyze the oxidation of copper (I) by oxigen. I'll try this experiment in the future.

  17. Could you bubble in ozone instead of air? Ozone can be created from air rather easily and I'd imagine that it would be far more reactive.

  18. Is it possible to use ozone and the sulphur dioxide in order to form sulphur trioxide and then making it reacting with water?

  19. Please make a video about lighting matches indifferent gases, I have some possible to do suggestions,
    Do regular air as control
    Do pure chlorine gas
    Do pure CO2 to show that it doesn’t burn
    Do pure oxygen
    Do NO2
    Do SO2
    Do pure H2 to show it doesn’t burn without oxygen
    But do it pure so no unexpected reactions ocur

  20. Instead of using an air buubler, could one safely use a commercially available oxygen concentrator during the oxidizing step? Would that exponentially reduce the overall time spent on this process, or does introducing concentrated O2 create a whole other set of problems that I didn't think through before hastily typing this out?

  21. You should give your narration, audio as well as visual, a bit more time. It feels fast and cramped and doesnt do yourself justice. Otherwise its great stuff.

  22. I guess this is useful if you have excess copper ii chloride lying around after pcb etching, but not specifically for this purpose.

  23. Some of the combinations you come up with are not what one would see in a common Chemistry text book. Do you have any references for designing reactions? I've been through the thermodynamics classes and "get" the Gibbs free energy stuff but am usually at a loss for finding sufficient data to use those concepts.

  24. I don't know a lot. I'm learning. I am impressed with myself. I took an old Ozone maker, ran a pipe to force the Ozone through a solution of H20 and Sulfur. Due to the speed in which the Ozone was created it took a few weeks. I did in fact make Sulfuric Acid though!

  25. Hello NurdRage. I am having a hell of a time getting acids here in japan. Some things have cas numbers that I can use but most dont. I speak english. I have been waiting for a vaccum pump so I can try Chemplayers process of bubbling SO2 through hydrogen peroxide. I also need to concentrate my peroxide up to 30% which is a pain in its self. So I would appreciate more videos geared toward people like me who have huge limits on availability. They dont even sell sulfuric acid to clear drains here. There is only so much fun stuff one can do without acids. It has taken me a year to get the litmus paper beakers scales and I built a magnetic stirrer. I am dedicated but limited.

  26. Theres nothing wrong with good old fashioned chemistry. Looking back at my old videos makes me nostalgic! 🙂 Keep them coming they are great.

  27. The audio sounds awesome on head phones. but I really am curious as to how you burn the sulfur. Is that a mix of sulfur and wax? great vids loving the science.

  28. Do you think there would be any useful optimization value in buying a $250-300 PSA oxygen concentrator to speed up oxidative regeneration of the CuCl? The zeolite nitrogen scrubber in a PSA doesn't produce pure oxygen, but it can enrich the %oxygen up to around 80-90%, and the flow rate should be similar to the air injection used in this video, it's at least a high enough flow rate to meet human respiration needs.

  29. Couple questions:

    Could you use something like ozone instead of oxygen to re-oxidize the CuCl to CuCl2 more quickly?

    Also, would an easier way to do this be by making H2SO3 from SO2 & H2O, then oxidizing it to H2SO4 with something like O3 or Cl2? (Cl2 would end up making HCl, but could be boiled off easily?)

  30. This method has now become a staple preparation of sulfuric acid for all our amateur chemist brothers in the UK.
    Here's hoping they still have access to potassium bisulfate.

  31. I have a more effective method for producing H2SO4 that is moderately scalable
    it uses drywall or hydrated gypsum as paste cathode with steel rod in the middle
    how 2 video comming soon

    Materials:
    then the anode is a lead coil
    the cell construction involves 3 containers
    paper sheet (seperator barrier)
    cotton (seperator)
    1 water bottle (smallest)
    1 glass jar (medium)
    1 metal/glass pot (large)
    The electrolyte is sodium sulfate made by reacting CaSO4 with NaOH
    to get starting electrolyte
    PSU 12v with max current of >10A

    construction and setup:
    The water bottle has holes poked into the sides to let water in and a sheet of paper
    is rolled and placed on side of bottle.
    Cotton is added at the bottom to seel the air gap of the paper roll in the bottle.
    The water bottle is filled with hydrated gypsum do not use plaster or it will solidify
    a steel rod is inserted in the midle.
    Add some of the starting electrolyte to this and keep it damp till the paper is wet on the sides
    then place it in the medium glass jar and fill that up with the rest of the electrolyte.
    Then you place the lead coil in the solution of the glass jar.
    the setup is placed in a metal/glass cooling container filled with water to prevent overheating.
    the cell is hooked up where the steel is the cathode(-) and the lead is the anode(+)
    run it for as long as you can replacing the central cathode to further concentrate the acid but make sure
    not to deplete the sodium ions.

    Post run cleanup:
    remove the cathode from the center of the cell.
    WARNING!! do not turn off the power supply untill the cathode is removed or the electrolytes may react and BOIL!!
    also chloride contamination may cause release of HCl gas.
    filter the electrolyte from the glass jar and place in the freezer until precipitate comes (NaHSO4+Na2SO4) and save it for future runs.
    the liquid is then boiled to remove HCl contamination then distilled to get pure H2SO4.

    PS I live in a country where u cannot buy sulfuric acid so i have to go and dig up some gypsum 🙂
    i can just get it from the ground that way!

  32. What if pure oxygen (from a concentrator were to be used, both in the sulfur burner and regenerating the solution)? Would that speed up the oxidation?

  33. But it is impossible to get sulfuric acid. Once you get sulfuric acid it will react with copper chloride in the beaker or any container

  34. Would it be possible to burn MgSO4 to yield MgO(s) and SO3(g) and bubble through water? If that reaction is still be too violently exothermic then could Oxygen and Hydrogen be generated in two separate reactions and be combined with SO3 to yield H2SO4?

  35. I want to make ethyl linalool via an sn2 reaction between linalool in an alkaline solution and lithium ethoxide. Is there anyone that can tell me if this will give me a good yield or produce any undesirable byproducts? Thanks!

  36. I know this is a slightly older video, but I thought this would be a good place to ask this.

    Does anyone know if it's possible to produce sulfuric acid via electrolysis of pure epsom salt (magnesium sulfate) dissolved in water? From what I remember of high school chemistry, the idea looks like it works on paper in the balanced equation:
    (MgSO4 + H2O -> MgO + H2SO4)
    but I'm an amateur chemist at best, and I can't find anything to confirm this without just trying it myself.

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