100 Comments

  1. "Degrades into silver nitride, which is a contact sensitive explosive"… ALLAH ACKBAR!!!! and… demonetized. Peace be unto you.

  2. I've always been moderately interested in Chemistry but you make it so easy to take in. I wish I had you as my Chem teacher in High School.

  3. Wow we just studied this in chemistry class in chapter Carbonyl Compounds about Tollens test with aldehydes and ketones.

  4. VERY COOL! You should leave the silver in, coat it with something to preserve it, and sell the NileRed beakers a vases!

  5. To me, chemistry is a demonstration of control. I do chemistry just because I can. But mainly I don't need it. I like the idea of being in control.

  6. I did this experiment at school and could keep the test tube that I made Does anyone know if the silver mirror will keep being on it for long time or if it will decay ? 🙂

  7. I’m gonna be completely honest here; I’m a freshman. I don’t even take chemistry yet and 99% of the time when I watch these videos I am completely lost when it comes to chemical compositions and all that. I still watch these, though, all the way to the end, because there’s something oddly fascinating about watching all this be made even though I totally don’t understand why or how it works (I’m not saying you explain bad btw, I’m sure if I really paid attention to it I could understand just fine, I’m just very dumb and very lazy.)

  8. Does this solution is volatile? I mean one time use only? Actually interesting make mirror things myself… If I bought the components what I need worried about didn't success… That's why I'm asking… Those are looks like very expensive… And one more thing, couldn't find pure silver nitrate is it problem? Generally what from does have powder or liquid? God bless the who help my question. Thanks!

  9. Your description of the silver nitrate solution is not quite right; .1 mole of solute in 1 liter of solvent is .1 molal (.1m), not .1 molar (.1M). Actual .1 molar is .1 mole of solute to 1 liter of SOLUTION, meaning you measure .1 mole of solute and add water until you get 1 liter of total solution. Due to the solute taking up some volume, this requires less than 1 liter of solvent, so it is slightly stronger than .1 molal, which is what you prepared. Then again, the difference is minimal and not at all relevant here, but you should know how molarity is defined!

  10. I want to do this with my Chem students. How can I ensure they don’t blow themselves up right before Christmas?? How should I safely dispose of excess and wastes so I don’t form silver nitride?

  11. I’de like to see synthesis of Sodium Silicate and it’s reaction when exposed to Carbon Dioxide just like it’s use in making cores for foundry metal castings

  12. I have gallons upon gallons of the waste from making the mirror solution. And even lbs of dried up waste I would love to find out how to . Recover the silver. It’s like a brown dirt when dried. What form of silver is it?

  13. Did you say the methods needs to be updated? I want you to try and say that to my country's chemistry tests. Why use a pecific chemical when you can use the old ways to make the maths harder?

    Vietnam in a nutshell

  14. Whoa throwback. My chemistry teacher did a demonstration of this and told us it was used in the past to see if a person was suffering from diabetes. Really circumvented doctors tasting the patients' urine to check if it was sweet. Shame I didn't get to keep the test tube with the mirror. Someone else got it.

  15. I would bet that the reason the stopper didn't get coated is that it didn't have an energy differential between liquid and air like the beaker did. It would be interesting to see how the reaction goes in a partially decompressed nitrogen controlled chamber.

  16. 0:10 can someone confirm that alpha-hydroxyketone shown would be tollen’s test positive? As far as I’m concerned only the second example which can tautomerize to aldéhyde can be Tollen’s test positive

  17. Ok, so kinda random, but does the surface your mirroring have to be the inside of glass, or could it be the outside of things made of plastics, or even metals?

  18. I definitely support the deduce the chemical/classic qualitative analysis you alluded to in the description.

  19. The way americans pronounce mirror is a pet peeve of mine. There are 3 'r's in there, yet somehow you only pronounce 1?!

  20. can you please make a video about how to recycle the silver present into exhausted photographic developer and fixer?
    in photographic developer the silver halides are reduced to metallic silver by hydroquinone or metol, but a lot of silver is often present in the solution (maybe because of the solvent action of sodium sulfite, used as preservative). in the fixer the unexposed silver halides in the photographic paper are cleared, so there are a lot of silver compounds in the solution. the main chemical is sodium or ammonium thiosulfate.

    regarding your video: is it safe to dump the colloidal silver down the drain? can it lead to heavy metal intoxication of fishes and other animals?

  21. Your glass stopper …. If you was to have tinned it with an activator first, the whole stopper would have come out shiny mirror, I've done this by dipping the part into stannous chloride, then rinse with deionised water, then pop the piece into the tollen's solution, … It mirrors really fast, 5 seconds at most.

  22. Just so you know, silver nitrate is often used in chloride tests. I've used it for years in my last job and that cloudy white color as you're trying to dissolve the solution is exactly what a positive indication looks like.

    TL:DR; if your silver nitrate isn't pure and is contaminated with chlorine (say from sea water), then the silver will combine with it to form silver chloride and that is most likely what you're seeing there.

  23. Oh, Red, I gotta stop you there. 0.1 M AgNO3 solution isn't 0.1mol AgNO3 dissolved in 1 liter of water, its dissolved in enough water to make 1 liter of solution. That's a big thing to confuse, and can really mess up precise measurements.

  24. Will you plate something like a small blown up balloon? Or your finger if the chemicals are safe enough? If i became a patreon could i make this a request?

  25. I think there's a confusion about the 0.1M AgNO3 solution. The 1 liter is not the volume of water but the volume of the solution.

  26. Are there any other mirror reactions that plate out different metals, like tin, copper, aluminium, iron, etc? It would be cool to see any that exist. Great video, cheers.

  27. Does the solution attack hot glue? if not, see about maybe stirring the reagent on a nice plate of glass, probably from a picture frame, to make a nice silver mirror. You can protect the mirror with lacquer.

  28. Isn't the turbidity in AgNO3 solution due to the presence of chloride ions in the distilled water used? Isn't this why double distilled water is used to prepare silver nitrate solutions?

  29. Your videos are absolutely educational and fun, I have to watch at least one a day.
    And you're the perfect person to ask this. Do you get haloalkane aldehydes? For example 2,3-dichloro-3-flourobutanal?

  30. In Alevels chemistry laboratory class, we made Tollen's reagent and produced the silver mirror. The teacher allowed us to take the test tube home so I took the one my group made. I still have it with me.

  31. Hi, I made a pretty large amount of tollens reagent (about 250 ml) – i know now that it's not safe to prepare it in advance, and soon something started to precipitate (silver like pieces). If it is silver, how pure it is and how could i get it out of the solution? Thank you! Martina

  32. You've got a bad habit of doing the process that degrades quickly first before actually setting the thing up you need it for

  33. 2:10 – The first time I knew something in a NileRed video without it being explained to me gets prefaced with "This sounds a little bit complicated…"

  34. 3:09…no Nile Red…whats floating around in there is most likely NOT silver metal particles.., it is Silver chloride and other insoluble Silver salts from the water you used. Even when doing this in a lab, which I have many times, the only water you should use is distilled AND deionised water, or as some in the lab call it, polished water, always hated that name.

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