One of the only channels I click Like before watching. 💪👍
@Antonowskyfly
11 ай бұрын
You took the words outta my mouth…and changing it up with the SMB was a nice touch, I expected an instant precipitation. The colourless transparent gold solution is an eye opener. It always makes me think about “transparent aluminum” from the sci-fi movie. (No spoilers!). Thank you Sir!👍👍🤟
@apveening
11 ай бұрын
However, "transparent aluminum" is quite easy to make, though not quite that size yet.
@deepovertone
11 ай бұрын
The reverse precipitation was my idea. Although he didnt do it quite the way I had suggested, it was cool none the less.
@johnwilliams8818
11 ай бұрын
Hah! That was a whale of an idea! 😁
@michaelotoole1807
11 ай бұрын
how do you know he didn't invent the thing?
@CSMMaster
11 ай бұрын
I am never going to get over how ethereal it feels to see real “golden water”. You are a true magician in this world of precious metal chemistry, Sreetips 👊🏻
@fauxfire27
10 ай бұрын
Hey Sreetips, first off, massive kudos for your dedication to refining gold, silver, and precious metals on your KZitem channel. Your expertise shines through, and it's clear you've put a ton of effort into your content. I've learned so much just from watching your channel, and as a fan who's been along for the ride for a little better than two years, I've noticed those 10k mL beakers you wield like a pro, are incredibly heavy and unwieldy. While it's undoubtedly impressive, your arms must be massive under those sleeves, I can't help but wonder if switching to 5k mL beakers might not only make your life a bit easier but also add a touch more finesse to your already stellar videos. Just a friendly suggestion from someone who genuinely appreciates your work! Cheers to more golden content! {edited for grammar}
@thegoodlookinorange1986
11 ай бұрын
We all learn a little something new every time. Thanks Chief. 😊
@jdii5698
11 ай бұрын
13:13 - Watching the gold precipitate out is always the most fascinating parts of your videos. How it happens almost instantly is mesmerizing.
@willemmaas9813
11 ай бұрын
Although the end-result is always the same it is fascinating watching the process form start to finish over and over again. It is amazing how your predicted yield is almost always an exact match when put on the scale. It is mesmerizing to watch the step by step processes to see the pure gold revealed in the end.
@MrJimihoffa
11 ай бұрын
@Sreetips 14:03 I noticed after the 4.5 tbls of SMB, that you opted not to do a quick stannous test to verify no gold in solution. What signs indicated to you a full precipitation?
@TheZombieSaints
11 ай бұрын
I'm not sure but I'm going to hazard a guess and say experience
@MrJimihoffa
11 ай бұрын
Right? That would be exactly why I chose to ask him the question, as opposed to asking some random. See, the experience he has is the exact knowledge I wish to possess. Curious, I know. @@TheZombieSaints
@SMOBY44
11 ай бұрын
I know i've said it before, but that neon clock is awesome. You're videos always amaze me in one way or another.
@sreetips
11 ай бұрын
It about to die. Being exposed that many hours has shortened its life. The battery terminals are badly corroded.
@SMOBY44
11 ай бұрын
@@sreetips Hopefully the movement can be replaced. Really cool prop in your videos.
@sreetips
11 ай бұрын
Didn’t think of that. The light should be ok. Just order a new movement.
@EWasteJILL
11 ай бұрын
@sreetips Hmmmm put clock in air tight glass box? Or better yet give Mrs. Sreetips the mission of finding a glass dome to fit over clock? (Smaller clock if needed) I L💖VE THE CLOCK! 😎💖
@sreetips
11 ай бұрын
Me too.
@DavidDavis-fishing
11 ай бұрын
Gooood evening from central Florida! Hope everyone has a great night!
@sreetips
11 ай бұрын
Goooood evening!
@gregfridholm2136
11 ай бұрын
Sree, you've taught me so much, thanks. Hopefully the Premium sub trickles you some fiat. Have fun!
@Robert-t5b2g
11 ай бұрын
Excellent finish on the bar. Absolutely beautiful.
time lapse in this and part 1 are as always great to watch !!!
@JamesAnderson-nz1ro
4 ай бұрын
It's always nice how the hydrochloric acid cleans the gold so perfectly . 👍👍
@jamesculver829
11 ай бұрын
You have so much I need to watch and learn from, Thank you!
@alllove1754
11 ай бұрын
Loving the clock and pretty colors, tbh
@tyrettke2450
11 ай бұрын
Loved the change up. I’ve always wondered if dissolving the SMB in water would have any effect. It was gorgeous to see. Reminded me of the flash you see when doing it with gas precipitation.
@sreetips
11 ай бұрын
Me too.
@ArielleViking
11 ай бұрын
Beautiful result and the reverse precipitation looked so neat. 👍
@drubradley8821
11 ай бұрын
NICE!!!! That change over flip in the SMB was like that magic trick or science class room color change lesson... That was clever..
@CSMMaster
11 ай бұрын
I am never going to get over ethereal it feels to see real “golden water”. You are a true magician in this world of precious metal chemistry, Sreetips 👊🏻
@lylestavast7652
11 ай бұрын
love that gold into the saturated SMB going clear and then *poof* - precipitation... so sudden !
@patricktrudeau2680
11 ай бұрын
Another great video! Thank you. I would guess that the reason it dissolves the base metals first is based on the reactivity series. Whatever is more reactive will dissolve first.
@mikeconnery4652
11 ай бұрын
Nice that you showed the orange desolved gold then watched it desolve in the aqua regia.
@Joe.Rogan.
11 ай бұрын
Reverse Precipitation is something I didn't think I needed to witness in my lifetime till now..
@nickrigney9498
11 ай бұрын
Hi mate you were questioning why the AR acts on the base metals first, this can be explained with the metal reactivity series like staged separation, the same reason your precious metals drop from solution on copper in your stock pot. any gold plate in contact with the iron or lower base metal if converted to a chloride would instantly exchange with the iron to make iron chloride, also other precious metal chlorides in solution will also precipitate onto the undissolved base metals over time, you can use this principle to you advantage to bring up concentrations on a staged separation.
@ryansullivan3438
11 ай бұрын
Thanks for your vids!
@AircreteHarry
11 ай бұрын
Very Cool!
@Friskain
11 ай бұрын
This is the first time i notice you had a clock its a Nice addision
@davestark7880
11 ай бұрын
the reverse preciptitation was a cool idea
@benwarren187
11 ай бұрын
I am absolutely fascinated and mesmerised by your videos.
@sreetips
11 ай бұрын
Thank you!
@benwarren187
11 ай бұрын
May I have a link to your eBay selling page please ?
@sreetips
11 ай бұрын
My eBay user name is same as my KZitem: sreetips
@benwarren187
11 ай бұрын
@@sreetips just favourited your page. Thanks my man !
@sreetips
11 ай бұрын
@benwarren187 thank you!
@gfhrtshergheghegewgewgew1730
11 ай бұрын
chemistry is so cool, i should've gone to school for it, or studied it on my own
@demon007mdc
11 ай бұрын
Wow, more than what was expected. Good one sir Kevin. 20 grams of gold.
@Lancelot.666
11 ай бұрын
Love your work my friend, the little bar was shaped like a tombstone... 😅
@MadScientist267
11 ай бұрын
Dissolves the base metals first for the same reason "cementing" works. The base metals are more reactive and so they will go into solution easier.
@MASI_forging
11 ай бұрын
Excellent work as always 👍👍
@paulknight1879
11 ай бұрын
Love what u do it's so fascinating watching u work with the gold ..
@husky500cr
11 ай бұрын
Another great video. Thanks
@PandemoniumLord
11 ай бұрын
I noticed your gloves at the end have a yellowish tinge to them. Is that gold? and if so, do you recover that in some way at all?
@sreetips
11 ай бұрын
The acid vapors cause then to turn color.
@mrgriff9648
11 ай бұрын
Base metals have a higher dissolution rate in aqua regia compared to gold, so they appear to dissolve first.
@wendigo6782
11 ай бұрын
Diluted SMB is perfect for final precipitation. Please do it more often
@mikehalvorsen4788
11 ай бұрын
What I was thinking of is not only have the propane too close, but also have 2 regular nosels instead of one large one. 2 regular size torch heads, one on either side of a large mold. Maybe? 😎👍🇨🇦
@sreetips
11 ай бұрын
I think if I pull the torch back, or maybe dedicate four map gas torches.
@Richmart1955
11 ай бұрын
From trash to treasure ❤
@mikehalvorsen4788
11 ай бұрын
I noticed in your previous video you were wondering why your silver came out the way it did. Could it be possible that you didn't have proper heat distribution? I'm talking about the mold. Sorry, I'm referring to the large bar of silver in your previous video. Thank you for putting out another good video. 👍😎🇨🇦
@sreetips
11 ай бұрын
That’s possible. I think I had the flame too close.
@markgellie7032
11 ай бұрын
That looked awesome
@tom23rd
11 ай бұрын
That little change up made my night haha, nice sreetips, nice! Lets say hypothetically one were boiling the chloroauric acid solution down to a syrup but they fell asleep watching football in another room and accidentally boiled it down to dryness. Would you expect gold losses when rehydrating? Would it crystalize? (Obvi i am not a chemist 😅)
@sreetips
11 ай бұрын
It may smoke if you get it hot enough. That might cause some gold to go up the stack. But I’ve never done it.
@josephcormier5974
11 ай бұрын
Thank you sir this was even more interesting than your normal video I really liked the reverse drop the way it reacted was way cool outstanding sir six stars
@rickyuraphotography1801
7 ай бұрын
Best gold dissolve ever!!!
@purjepurpuri833
11 ай бұрын
Very good video thank You!
@johnwilliams8818
11 ай бұрын
Probably that chunky pendant (?) that looked a little more solid had more mass to it. I don't remember where it came from, just remember thinking to myself it looked more solid then the rest.
@SephBane
11 ай бұрын
Why do you do stanis tests when you know there is gold in solution and not after you precipitate? I would think that is when you would want to test to make sure you got all the gold.
@sreetips
11 ай бұрын
Sometimes I forget to do it.
@ExtractingMetals
11 ай бұрын
Where did you buy those watch glass covers? I like the deep well design!
@sreetips
11 ай бұрын
Oil warmer glass. When ever I see them at the thrift store I buy them. They make excellent reflux cover for my reaction beakers.
@ExtractingMetals
11 ай бұрын
Thank you!
@jlemieu1
11 ай бұрын
Small suggestion. A status test after would have been good idea
@sreetips
11 ай бұрын
Agree, stannous test should be done before and after each time. Sometimes I forget to do it.
@leelewis5730
11 ай бұрын
Once you precipitate the gold from the green liquid why wouldn't you test the remaining green liquid for the presence of gold? I found the green color of the "waste" liquid a bit suspect and I'd have thought that a gold test would have been in order before pouring it off........just a thought.
@apveening
11 ай бұрын
Going by the colour, I would expect the test to show some PGMs, probably not much gold.
@sreetips
11 ай бұрын
I forgot to do it. Sometime I get in a hurry.
@Cjohn31
11 ай бұрын
That's odd, it eats all the base metals first and then works on the gold after?
@marcusandersson...
11 ай бұрын
Great video, as always. I was just wondering why it is that the filter paper doesn't break down when you pour AR through it? Has all the acid been expended, or is it because you added the ice?
@sreetips
11 ай бұрын
The ice. Hot AR would cause the paper to fail.
@WhyamIstillwatchingyoutube
11 ай бұрын
A little Tombstone bar for Halloween it seems.
@offjasonwaynenicholsjr.182
11 ай бұрын
it;s so exciting! lov it!
@mikeconnery4652
11 ай бұрын
Excellent video
@davidl7459
11 ай бұрын
So after you add the first amount of SMB shouldn’t you do a stanis test to make sure all the gold dropped? Or am I overthinking it?
@apveening
11 ай бұрын
Technically, he should have, but he went by experience and judging by the results, he was right. And even if not, the gold will some time in the future be recuperated from the waste container.
@davidl7459
11 ай бұрын
Was just wondering cause he will do the test on fluids that you know have to have gold in them but times where you’d want to make sure you got it all, he doesn’t. Just struck me as backwards…
@sreetips
11 ай бұрын
Yes, a stannous test should be done before precipitation to verify gold in solution, and after to verify it’s all down.
@sreetips
11 ай бұрын
I’ve refined hundreds of ounces over 13 years. I can tell when all the gold has dropped. But I should do it consistently. Sometimes, I get in a hurry and forget to do it.
@roberthainline4552
11 ай бұрын
Is there an optimum melting temperature at which point you pour the gold to make it come out so pretty?
@sreetips
11 ай бұрын
Yes, I can tell when it’s there when the molten gold don’t stick to the melt dish and forms a nice blob of molten metal
@wernerlotz1605
11 ай бұрын
I would say why base metals gets dissolves first with aqua regia before gold, is because of the reactivity series of metals. gold is least reactive🤔
@sreetips
11 ай бұрын
Agree
@URackADisciprine
11 ай бұрын
What type of glass jar (with the beak and twist lock lid) are you using for your silver to get rid of the excess nitric acid? They seem to be a good size for the purpose but I am having trouble finding them. Thanks
@sreetips
11 ай бұрын
Two liter tall form beakers
@URackADisciprine
11 ай бұрын
Thanks for the info@@sreetips
@matthewtracy8744
11 ай бұрын
That was really cool watching the solution go colorless before precipitating the gold out. All these various reactions are so amazing to watch. Im curious, can you keep gold suspended in solution indefinitely? Not sure why i want to know. Just curious.
@sreetips
11 ай бұрын
Yes
@larrykester8593
11 ай бұрын
Sr Chief, question for you? For a Büchner funnel, which do you recommend? A Polypropylene, Ceramic, or Glass one? My larger flask is 2000ml. So, can you also give me an idea of what size to get, funnel that is.
@sreetips
11 ай бұрын
I have a video on them. I use ceramic; 12.5cm, 11cm, 9cm and 7cm. Make sure and get them with the small holes in the floor. Large holes can’t withstand the vacuum and will fail.
@larrykester8593
11 ай бұрын
@@sreetips Thank you, sir. Very much appreciated.
@timsmith9645
11 ай бұрын
Awesome gold bar thanks for sharing sreetips
@roberthercules3159
11 ай бұрын
14:29 poured off the solution without stannous testing to make sure all the gold precipitated??
@sreetips
11 ай бұрын
I could tell it was all precipitated, but you’re right, I should have tested it.
@MadScientist267
11 ай бұрын
Have you tried cementing gold with copper? I'm curious if this is a viable separation method from things like nickel and such... If so, would you demonstrate it?
@sreetips
11 ай бұрын
It would be slow going, I think. Zinc is much quicker.
@MadScientist267
11 ай бұрын
@@sreetipsWouldn't zinc drop the nickel?
@MadScientist267
11 ай бұрын
@@sreetipsI should clarify. I want to try and drop only the gold but from a dirty solution. Primary contaminant would be nickel I believe, may be a small amount of copper as well. Goal is to keep the nickel and copper in solution so I can get the gold roughed out to a high enough purity to do a traditional AR dissolve and not have the SMB drop go weird on me from other metals
@sreetips
11 ай бұрын
Yes
@jamisontaylor878
11 ай бұрын
Nice yield 😊
@frankmccain4359
11 ай бұрын
Gday Sreetips have a Chem question instead of using nitric acid you can use sulfuric acid my question is this adding dilute sulfuric with table salt will create nitric acid in the container?
@sreetips
11 ай бұрын
No, sulfuric plus table salt won’t create nitric acid. But, I have used boiling sulfuric acid to treat (remove silver and base metal) inquarted gold. Then I used hydrochloric and hydrogen peroxide to dissolve the gold (instead of aqua regia). I did a complete refining using zero nitric acid. It’s posted on my channel. Complete refining with OTC chemicals.
@isaacgarza3307
11 ай бұрын
It might be that the aqua Regina attacks both the metal and gold at the same time buT metal being more corrosive and gold less the reaction tends to give the illusion that it attacks metal first......while in reality its just the gold resisting a liitle more time....
@newtronix
11 ай бұрын
Nice smb change up! How much does it cost to buy gold filled scrap? I'm guessing one would get a good return because of it's perceived low value when buying it?
@sreetips
11 ай бұрын
We get it in with junk jewelry. I just set it aside until I have enough to do a batch.
@newtronix
11 ай бұрын
@@sreetips that's a good return for small change then!
@sreetips
11 ай бұрын
It’s almost like free gold.
@debcamp2359
11 ай бұрын
U R a greeaat content creator! Have u ever seen those snake oil vids??
@sreetips
11 ай бұрын
Oh yes, modern day snake oil. It’s everywhere.
@purjepurpuri833
11 ай бұрын
Haw the platinum settlment looks linke?🤔😍
@sreetips
11 ай бұрын
Platinum will stay in solution and gets poured off in the waste solution after the gold has been precipitated.
@adam-xi2nc
11 ай бұрын
Hey Sreetips I was wondering if you had any advice on ore extraction? I have a decent amount of quartz gold ore and nothing to do with it lol.
@apveening
11 ай бұрын
Crush it, leach all lesser metals including silver from it with nitric, process remains with aqua regia. Don't expect a significant amount of gold until you have at least several kilograms of high grade ore.
@sreetips
11 ай бұрын
I don’t have any experience with ore.
@allentruitt8632
11 ай бұрын
At the bottom of your gold refining waste solution container. Isn't that gold?
@sreetips
11 ай бұрын
Yes, that’s my offline saving account.
@allentruitt8632
11 ай бұрын
@@sreetips ha ha. Ok.
@Enjoymentboy
11 ай бұрын
Watching these videos brings up a weird issue I encountered and have not been able to come up with a solution for yet. Wondering if you have any thoughts. I got a batch of old dental gold for super cheap. Like pennies on the dollar cheap. And this stuff is old: early 1900's old. Most was easy enough to refine and had no issue but I have a few pieces left that will just not process. No reaction to hot nitric. No reaction to hot dilute or concentrated sulfuric. No reaction to pirhanna. VERY minimal reaction to HOT AR and when I say minimal I mean that after 12 hours in boiling AR the solution turned a mild lime green but no bubbling and nothing more than a minor loss of shine. This stuff is not magnetic and it is heavy too. When I checked the density it comes in heavier than silver with less volume. I HAVE to think PGMs but with zero red/brown/orange colouring I don't see it. What did dissolve has no reaction to stannous. MAP gas torch just gets it red hot but it doesn't melt. MAP/Oxy torch does melt it but very reluctantly. Getting sick of messing with it and have thought about selling but have no way to value it without knowing what's in it. TBH I'd rather just dissolve it and then add the solution to my stockpot for later recovery but that hasn't been working out. Thoughts?
@sreetips
11 ай бұрын
That’s bizarre, test for nickel to at least eliminate it.
@antonschulte9150
11 ай бұрын
I've seen a lot of older dental scrap containing high amounts of platinum group metals, in many cases over 20% platinum and / or palladium each. Also the contamination with other platinum group metals often reached over 1%
@sreetips
11 ай бұрын
There are some modern dental alloys that contain no precious metals.
@Enjoymentboy
11 ай бұрын
@@sreetips I thought about that but this stuff all comes from a guy I know whose family ran a funeral home in Europe for around 60 years. In his country they aren't allowed to bury them with the dental work so they have to remove it and give it to the families. In many cases the families don't want it so the funeral home kept it. His family closed the home down in the early 60's so all of this stuff would have come from before then. Who knows what sort of alloys they would have used there though? Out of what I got from him I'd say 90% was high gold content and a very nice yield. I'm well into profit at this stage. 😁
@jeffd3660
11 ай бұрын
Awesome video Sreetips ... thanks for posting 👍👍
@kezam1924
11 ай бұрын
maybe its me but you didn't stannous test the liquid before pouring it off to see if there was any gold still in the liquid
@sreetips
11 ай бұрын
Good catch. It should be done every time. But sometimes I get in a hurry and I forget to do it.
@bicdut
11 ай бұрын
Price out that corning ware. That might be the real gold
@JohnDoe-fd6wf
11 ай бұрын
Curious as to why you refine to such a high purity? I believe you said in an earlier video that the refiner you sell to only required 99% purity. Seems like you are spending a lot in materials and killing your profit margin when it isn't necessary. What am I missing?
@sreetips
11 ай бұрын
Here’s what missing: I can’t not do it! I love it. And the gold is my profit. Gold is money. Paper dollars are money substitute. Plus, I do it for the show, to create more content for my KZitem channel.
@JohnDoe-fd6wf
11 ай бұрын
@@sreetips Well, I can understand that and it's much appreciated. I look forward to all your videos...thanks!
@roberthainline4552
11 ай бұрын
What is your ingot molds made out of?
@sreetips
11 ай бұрын
Graphite.
@themyceliumnetwork
11 ай бұрын
how much on average does your youtube channel make per month during 2023 ?? i see some of your videos have 7M+ views
@sreetips
11 ай бұрын
A million views is probably twenty grand
@themyceliumnetwork
11 ай бұрын
@@sreetips good going !! congrats, you work hard for it !
@jameswest685
11 ай бұрын
So, where did you go to school? I like silver over gold, fraction.
@aredditor4272
11 ай бұрын
He was in the Navy, was a pilot, and I think he learned on a classic online metals refining forum. His wife got him into it, she was an expert buyer of used and scrap jewelery. I think he was taken aback by what her buyers were giving her. She just has a good eye for gold and silver.
@sreetips
11 ай бұрын
Embry Riddle
@aredditor4272
11 ай бұрын
@@sreetips same for a family member, now they courier VIPs all over the world in a Citation..
@kennethpaulson5030
11 ай бұрын
Were do I get nitric acid at, only have a homedepot in pahrump nv.
@sreetips
11 ай бұрын
You can make it with potassium nitrate and sulfuric acid.
@kennethpaulson5030
11 ай бұрын
@@sreetipswere do u buy them at please
@mikeconnery4652
11 ай бұрын
On line or try asking scientific supply stores or a college chemistry lab.
@sreetips
11 ай бұрын
Gfs chemicals
@SHADOW1982
9 ай бұрын
Why is the solution green
@sreetips
9 ай бұрын
Copper turns it blue, gold turns it yellow. Blue and yellow make green.
@rafaelstauffer1
11 ай бұрын
Muito bom seus vídeos!
@sreetips
11 ай бұрын
Thank you!
@jahescobar2762
11 ай бұрын
Can you refine your whole gold stack? Please!!!????
@sreetips
11 ай бұрын
Absolutely
@felsinferguson1125
11 ай бұрын
12:44 - Seems to me that usually by this point, the solution is a nice, bright, crystal clear (or pretty darn close) brilliant yellow. This batch is awfully green, and strikes me as looking a touch "muddy" - not nearly as clear as usual. Bunch of copper left in the solution? At 17:50, the solids look strangely orange compared to what things usually look at this stage - Pretty near every other refining vid you've showed us has looked a lot like cocoa powder (at least to me), rather than that "almost orange-peel" color. I see the re-dissolve also looks odd - Like the gold, it seems mighty orange, and slightly murky compared to what we normally see. Even the re-filter is looking "wrong" to me... Still seems "too orange" to my eyes at 22:15-ish. What's up? Didja "break the formula" or something?
@sreetips
11 ай бұрын
This type of scrap, like jewelers scrap, you never know what’s in there. They tend to carry junk throughout the entire refining following the gold to the end product. I’ll refine it again (inquart, part with nitric, dissolve in AR) with my next batch of karat scrap. That will clean it right up for me.
@felsinferguson1125
11 ай бұрын
@@sreetipsOh yeah, I have absolutely no doubt that another run-through would do the trick. Just seemed to look strange to me.
@MrWeedWacky
11 ай бұрын
there's gold in them thar solutions!
@scottindestin
11 ай бұрын
Always a joy when a new show pops up. This stuff never gets old.
@skeeterboombaty
11 ай бұрын
love the addition of the clock! Its cool to see how the time goes by as the reactions progress. Love it!
@thejayjoint5713
11 ай бұрын
Nice back to back!
@firstnlast
11 ай бұрын
Really liked the change-up!
@HAL_9001
11 ай бұрын
@25:20 it's like alchemy; you transmute forbidden orange juice into forbidden chocolate milk! 😲😲😲
@ifindmetal
11 ай бұрын
As I was watching that I said man that doesn’t look like 13 grams of gold in powder I was thinking last time you did GF you got 3.5% yield
@floydsallee2041
11 ай бұрын
Let me be the first one to say keep it up
@tuoppi42
11 ай бұрын
@10:15 base metal dissolving before gold - see the electrochemical (reactivity) series of metals. The base metal is very likely more reactive than gold (unless it is platinum) and the reactions prefer to take the easy route.
@empirefinds
11 ай бұрын
On nights brother just watched the last one awesome instructional video
@EWasteJILL
11 ай бұрын
Visit a reactivity chart. Iron reacts with acids BEFORE gold. 😊 Tada! 🎉 There's your answer to why the metal devolves before gold in aqua regia.
@Antonowskyfly
11 ай бұрын
There is something to the query as there is an equal amount of reagent(?) in contact with gold as there is with base metals but the solution dissolves the base metals BEFORE it begins to act on the gold (from what I assume is being implied). I was going to say that it appears the solution has made a decision, a choice, to consume one before the other which, for me, is all I need to declare… “IT’S ALIVE!”🧟♂️ (I realize that is a zombie not a depiction of the Frankenstein monster, emoji selection lets me down once again):(
@B-System
11 ай бұрын
@@Antonowskyfly Both the HCl and the HNO3 can take the various base metals directly to their respective chlorides/nitrates, but the reaction that allows chloroauric acid to form requires some fairly complex cooperation between several nitrate and H+ ions to put the gold into an ionized state where HCl can attack it, so basically the acids get all their other work done first.
@gsestream
11 ай бұрын
gold is less reactive in the reactivity series, in that order, same as in electroplating out stuff, ie the metals try to react with the acid first in the order, most reactive first, like the preferential displacement reaction order, ie zinc is before iron and copper etc. HCl + Fe -> FeCl + H etc. substitution reactions.
@gsestream
11 ай бұрын
same for the HNO3 + Fe -> FeNO3 + H, again a preferential substitution reaction, also as you said before, the HCl probably reacts first before HNO3
@gsestream
11 ай бұрын
I wonder what happens if you replace the high temp melting atmosphere with so2 gas
Пікірлер: 247