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.)
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!
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!
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?
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.
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.
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?
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.
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.
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.
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.
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?
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.
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
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.