Gold Aqua regia dissolving. Chloroauric acid. gold refining recovery. Pure gold precipitate.

[@MakeGold]

Aqua regia is a very strong acid formed by the combination of concentrated nitric acid and concentrated hydrochloric acid, both of which are strong acids. It is generally used to remove metals like gold and platinum from substances, especially in microelectronics and micro-fabrications labs. Aqua regia formula and recipe Since aqua regia is just a mixture of two strong acids, it doesn’t have a chemical formula of its own. However, it can be represented as HNO3+3 HCl, which basically indicates that it’s a mixture of nitric acid (HNO-3) and hydrochloric acid (HCl). Aqua regia solution is usually a yellow, reddish-orange, fuming liquid and has a rapidly changing composition. The traditional aqua regia solution is comprised of a 3:1 molar mixture of hydrochloric acid and nitric acid, respectively. Note that concentrated nitric acid is about 65% and concentrated hydrochloric acid is nearly 35%, so the volume ratio is generally 1 part of concentrated nitric acid to 4 parts of concentrated hydrochloric acid. Another important precaution to consider is that one should add nitric acid to hydrochloric acid, and not the other way round. Usually, they make around 10 milliliters of aqua regia for experimental purposes in labs. Needless to say, since we are dealing with very strong acids here, participating chemists should wear proper protective lab gear and the apparatus should be handled with the utmost care, as aqua regia is highly corrosive. It releases toxic fumes and is very dangerous if it comes in direct contact with human skin. How does aqua regia dissolve gold? Aqua regia is primarily popular for its ability to dissolve gold, palladium and platinum, all of which don’t react easily with chemicals. Aqua regia uses and applications Since aqua regia can completely dissolve gold, it’s used to produce chloroauric acid, which, in turn, is used as the electrolyte in a process for purifying the highest quality gold. Aqua regia is also used for metal etching and cleaning lab equipment (especially glassware of organic compounds). Aqua regia is an integral part of the extraction and purification processes of gold and platinum. Aqua regia and its World War 2 story Back in 1940, when Hitler-led Germany invaded Denmark, Hungarian chemist George de Hevesy dissolved the Nobel Prize gold medals of Max von Laue and James Franck in aqua regia to keep them safe from the Nazi troops who were ransacking the chemistry lab at the Niels Bohr Institute.

[@thole4343]

A

[@sohaibal-arefi5397]

If the concentration of nitric acid is about 68%, and the concentration of hydrochloric acid is about 32%, so what is the volume ratio of the aqua regia mixture should be?

[@anupram3884]

Hamen rhodium Pani Mein Se gold nikaalne ki rhodium nikaalne ki ful jankariyan chahie aur kya kya chemical dalta is jankariyan chahie

[@rahimpartovi2110]

@@sohaibal-arefi5397 it must be 4. To 1as i see from one of the web page .

[@tahan4007]

Hi Gentlemen How we can to remove the sulfur from sand

[@arnedalbakk6315]

Thank you fore a Great clip 😊. You are truly one of the best on KZbin 🙏

[@TheDirtydisaster]

My favorite thing about these videos from you guys is the lack of both information and entertainment.

[@momisvargas]

This is the best video related to purifying gold.

[@skeetersaurus6249]

Ok, so what do you do if you have gold that is 'contaminated' with other metals (iron, silver, lead, etc.), where you cannot mechanically seperate them first? If you add the 'mixed metals' into Aqua Regia, you end up with impure Chloroauric Acid. If you add Sodium metabisulfite, you will precipitate more than just gold. If you preface your work by 'soaking' the mixed metals in a 10M Nitric Acid, you MIGHT get the metal purified better before making your Chloroauric Acid to start with. My question for you is, what metals DO precipitate from impure Chloroauric Acid when you add the Sodium Metabisulfite, assuming a mix in equal quantity of gold, silver (assuming amalgams of mercury also are present), tin, lead, antimony, selenium and gallium?

[@frantiseklaluch6605]

You are right, this is pain to watch... oxalic acid is more selective... but disolve whatever with AR just hurts my eyes...

[@shirouie]

Sir, could you clarify the steps? How did he end up with chloroauric acid?

[@frantiseklaluch6605]

@@shirouie HNO3 oxidises gold, that reacts with HCl formig complex H(AuCl4), soluble form of gold.

[@SunnyKetPatil]

How to remove tin from gold

[@frantiseklaluch6605]

@@SunnyKetPatil As for me, cupelation...

[@hugogonzales8721]

Can you send me a list of equipment that you used. Including the the cauldron.

[@keefardin612]

not to well explained like how did you get to the powder gold stage I KNOW HOW but a newbie wouldnt like it tho how much was the final weight?

[@amolbgadkari]

Can anyone help to clarify how the used chemicals are neutralised before going to drain. A video on disposal would be of great help.

[@justabouthadit5872]

No need to neutralize anything, just label it properly and take it to your local landfill and or hazmat facility and they take it and do the dirty work.

[@joeygagliano3317]

What am I doing wrong? I have dissolved gold in aqua regia and I even get the same color foam and reaction when I add sodium metabisulfite. However, I have no accumulation at the bottom of the beaker.

[@claybutler1662]

What's proper PH before adding metabisulfate ?

[@deivisonmuller9933]

Também queria saber

[@Praptoprapti2023]

So this aqua regia only disolve gold? How about other impurities metal they left behid?

[@GivyGivy-o3o]

Hi I need help with my gold, I did it but I failed, the sodium metabisulfite is sitting under my beaker

[@azoozahmed887]

Thank you, sir, for all the information, and I hope you made a video about determining the concentration of gold in the ore by titration

[@GilsonSantos-lz4ec]

Senhor é um flademonio antigo chamado flabaal está escrito na bíblia Jerusalém

[@user-qd9gl2op8qHmada]

اخى العزيز كيف اتجنب رائحة SMB الصعبه

[@MakeGold]

use the hood or chemical protective mask

[@70ssamayal69]

HI I HAVE ONE DOUGHT IAM ADDING MOTHERBOARD GOLD COATED PINS IN 1:2 (NITRIC AND WATER)ACID AFTER ONE HOUR I FILTRING THIS ACID IAM GETTING GREY AND ASH COLOUR DUST WITH GOLD FOILS HOW CAN IF SEPRATE GOLD AND GREY POWDER AND WHAT POWDER IS THAT HOW TO DISSOLVE

[@Ruban5678]

How much gram want add metabisulfite, maximam how to dry powder final stage, r u doing heating process?

[@temesgentenaw3308]

hey dude....to form the aqua regia we use 3 hcl by 1 nho3 ....then we add 2 gram gold in aqua regia.Can we precipitate by cu and we can get more than 2 gram au ....

[@sammak9281]

How to extra shine in diamonds like not properly watery colour it's some like reddish yellow and black shade in real diamond So please tell how to remove it's colour shade?

[@muhmmadrafqta6508]

Sir tell me the nemes of the acid to this is will be help for my life please

[@tahsinmaria112]

HCI and HNO3 are used to make aqua regia

[@MarcosAurelio-eg8um]

Congratulations for your channel I really would like to know more about this process des already thank you thanks I'm Brazilian send me your link

[@maii0082]

2:44 Suddenly more liquid, what kind of liquid?

[@TVchristezite]

Sodium metabisulfite

[@SuperTubeFan]

he may have added Urea and water to neutralize excess nitric acid

[@scruffles1132]

What were the crystals added at 7:30?

[@jomariecinco4655]

I believe it was sodium metabisulfite, to make the metal shiny.

[@chadgilbertson3821]

Or borax. Metabisulfite does the same.

[@angelnunez1179]

Scruffles 113 that would be... Borax.

[@scruffles1132]

Angel Nunez TY.

[@ahzelparaiso1648]

It could be BORAX or SODIUM NITRATE..

[@vishnudass5902]

A mixture of HCL and HNO3 Amazing video

[@pastorini59]

Is it possible to create aqua regia, instead of using nitric acid, use potassium nitrate?

[@AmineAmine-ty6nx]

yes u can

[@serenity6988]

Sir I have a ? for you based on many videos I have watched and studied. Is there a new tech that allows anyone to dissolve gold with a citric acid based setup. I watched on where they dipped in cpu boards and with in 15 to 30 sec, the gold was off. No electrolysis applied in action. Very impressive and applicable more than you can imagine if true. looking for this formula for me and others. Can you help in any way.

[@anahoae]

Impossible any acid used for circuit boards is to remove other materials from gold not the opposite

[@GilsonSantos-lz4ec]

Água régia onde devo comprar

[@MakeGold]

is a mixture of nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3

[@kimmayongka-bunyan9714]

Is Aqua Regia same Cyanide? In dissolving cyanide, what is the ratio between water and cyanide? thanks a lot brother.

[@thomasringjr.1630]

Aqua Regia is a combination of Hydrochloric and Nitric acid.

[@netofuentes8308]

cornstarch i-$0-late- gold

[@aridinarifi5833]

Bahasa Indonesia ya apa Obat cobak terangkan

[@neoupnishad1976]

At last the powder you get --is that gold salt or pure gold. what to do to get pure gold powder ?? i need pure gold powder for medical purpose. not gold salt ??

[@anahoae]

Must be gold as well as nobil metals his way may include even copper and lead

[@ramadasprabhu7645]

Gold donot have any medicinal value

[@kartiksaraswat7448]

What you add water in aqua regia

[@loweverest548]

Sir, does it matter or not if you neutralize the acid before dropping it with SMB?

[@justabouthadit5872]

The smb will have a more active reaction (foaming and boiling) if you don't neutralize first with urea, but it makes no difference in the quality of the end product.

[@qarimahmoodmiya4294]

Sir sodium Kahan milega.yani kis dukan par.potassium nitrate kaha aur kis dukan par milega.kiya aasani see mil jaega????

[@moazzamalish4682]

Chemical laboratory sa pata karo

[@josephpecoul6532]

Your gold is always very beautiful thanks for sharing.

[@marimack8578]

Can i use muriatic acid to make aqua regia?

[@nevercertain]

That's what hydrochloric acid is. HCL = Muriatic acid Edit: just realized this comment was made 3 years ago but still gonna leave my reply in case anyone has the same question

[@manojkhera875]

U must tell how this aqua is made

[@gabrielgarduno7236]

You no added Urea?

[@mostafaelbadry758]

I fellowed the same steps and had a white powder,,,,why please?

[@andrewb7622]

Add more HCL

[@psychosorcery9923]

Nice work bro i had some quest regarding to it..??

[@TahirKhan-ko5nq]

Hey what is SMB powdar you ansr Urdu

[@GilsonSantos-lz4ec]

Esse pó branco aí passar para nós internautas OK 👍

[@andrewb7622]

A lot of steps have been left out. Gold looks contaminated in bar form. Precipitate looked good though

[@mahhamadchanda7107]

WICH NAEM BORAX POWDEA

[@sunilchatarpaul6190]

Hi I need some info can u plz help me

[@sekkk8284]

Aqua regia filter get water then mix urea and sodium metalbisulfite filter then get the material and then burn....lovely gold

[@daneenorris5417]

Any other small refiners want to help each other out?

[@andrewb7622]

What do you mean?

[@hannible1002]

Yea could we chat?

[@davidgustavomacedo1038]

Parabéns pelo ressultado; Deus abênçoa.

[@70ssamayal69]

IS THAT POWDER IS NICKEL

[@TheAyhan76]

Aqua regia no 3to 1 /giving slowly HNO in the HCL and then failed process is give sodium sulfide when no hno in to aqua regia and then give sodium hydroxide this is good

[@narendrakhona1168]

NOT FOR BEGINNERS. NEED MORE CAPTIONS. LOT OF STEPS MISSING.

[@ismailislam3617]

Le nom de produie

[@TahirKhan-ko5nq]

Very nice video 😍

[@samksa802]

وين القى المواد

[@anahoae]

تعتمد على البلد الذي تسكنه

[@anahoae]

هناك طرق أفضل من هذه الطريقة

[@bookvillage3152]

He is wrong he must resources the nitric acid with urea or soulfamic acid then bring sodium metabi sulfite and its dont need put sodium metabi sulfite a lot

[@shrikantvedpathak785]

I made mistake. I put extra sodium metabi sulphite in aqua regia solution it results precipitated gold again goes in solution Please help me.. What should I do?

[@prashantkeshavbhagat5940]

For 10gm un pure gold how to use

[@Hawkido]

Inquart gold with silver until the gold is 25% or less. smelt, dribble alloy into water to increase surface area, remove and dry. Place in a glass beaker, Add nitric acid to remove silver and copper from alloy leaving gold (and possible lead in alloy) *the gas produced by reacting nitric acid is dangerous to breath, commonly referred to as red death, you have been warned*, the silver/copper will be carried away by the nitric acid rinse. Keep this as you can recover the Silver form this later by adding a copper sheet to the silver solution to release the silver. Once the gold alloy stops reacting with nitric acid after several rinses, then you can begin the Aqua Regia treatment, use as little nitric acid as possible to dissolve the gold by adding it slowly to the HCL/AU mixture. The gold will slowly begin to dissolve into the HCL, once it is all in solution add a few millilitres of Sulfuric Acid to cause any lead in solution to precipitate out as lead sulfides which can then be filtered out of solution. Then you can begin to precipitate the Gold out of your final product using Sodium MetaBisulfate. You can check to see if you have removed all the gold from solution by using StannousChloride on a sample drawn from the solution. Properly neutralize all acids and dispose properly depending upon your region.

[@sandorracz2401]

UREA??????

[@tejas9987]

No

[@SuperTubeFan]

He added something just before 2:44

[@alisedattemel8011]

Direk olarak tuzlu suda akım ile direk elde edebilirsin au klorür içeren bir metall tuzda inorganik bir metaldir elektro şok tuzlu su direk kahverengi çökelek ekde edebilirsin ugraşma okadar

[@chickenj90]

That last picture isn't pure gold and probably some random stock image

[@GilsonSantos-lz4ec]

Imagem do flademonio deus zeus 👹

[@MonkeyDAlfred]

Nice FF15 soundtrack

[@DeepakKumar-fy9qs]

Sir very nice

[@GilsonSantos-lz4ec]

Senhor é um flademonio antigo chamado flabaal está escrito na bíblia Jerusalém

[@masacatior]

I see you on the dark side of the Moon 🎶

[@keanaandkathleen1775]

Ganyan Ang gusto ko Taga refinary ng gold

[@styx7989]

with 10gr of ram fingers he have 1kg of gold ^^

[@kashishmishra2110]

Wowww..

[@johnnyleewalker9872]

The fumes are more than Dangerous they’re deadly in more ways than one.

[@hannible1002]

Who cares if you get rich lol

[@steveperez660]

Nitric acid

[@TroubledOnePaydirt]

I mean, I respect it, but that is not “pure gold” by any stretch of the imagination. It’s gold. Yeah. But “pure gold” has meaning to it, and this is not it.

[@johntherrian5365]

Smb will bring down 99.9x% gold if used correctly. It is rather pure.

[@jeffstewart8627]

WRONG... In every way imaginable.

[@dursuntopcu5200]

dude bak bu böyle bir cok ceşitli ürünler elde ediyorum sonucuna veamiyorum camu ve tozlar cok var

[@steveperez660]

You are wasting gold when it is not covered up

[@TheAyhan76]

I’m forgot Kalium hydroxide killed HNO

[@salihakdag6371]

👍👍

[@keanaandkathleen1775]

Walang makikialam ng ginto ko Doon sa dasmarenias salawag cavite maliban Kay mayor joey Suan sya lang puwede Dyan.

[@masacatior]

See you on the dark side of Moon

[@jyotiben6723]

Hai

[@joehutter2071]

I don't like it when you people make f****** videos of recovering gold and you don't talk through it you should jealous the step by step process

[@mr.l2871]

👍🌟🌟🌟

[@haribahadurbiswa]

Like 🌹

[@saidgilbygilby6397]

متميز

[@abinaslimbu3057]

Earth worn

[@msheikh3046]

Incomplete video

[@MakeGold]

Hey there! Thanks for watching the video!

[@keanaandkathleen1775]

Gobywrno kame Dito baket

[@ebrahimesawy3124]

I'm from Egypt, I want to sell a large quantity of scrap computer is ready to work Ram and Brcissor

[@seanandrews8217]

Contact info want to buy

[@russellangellimalima4746]

Show

[@astritibrahimi4918]

24karat

[@marcofuina9736]

NON è oro puro quello.

[@unboxingthetechtube]

fack videos

[@styx7989]

pure fake

[@GivyGivy-o3o]

Hi I need help with my gold, I did it but I failed, the sodium metabisulfite is sitting under my beaker