Electrolytic refining of metals | Metals and non-metals | Chemistry | Khan Academy

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Providing

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[@ImminentTempest]

I never fully grasped this concept until now. Thank you for your help!

[@jigu-pigu2009]

This is legit the best video ever!!! Best explanation on youtube

[@divyasharma3185]

But sir my question is that ...we can only get metals from earth crust and pure metal by refining it ...then from where we take pure metal wire ... the wire which you said we can take from market .that came from where?

[@Aarush1-INDIANEXO-L]

That metal is produced by much complex and time consuming method ,thus taking a copper which already pure by such method and doing electrolytic refining is easier

[@Aarush1-INDIANEXO-L]

In the complex process , the crude metal is heated and very high temperatures and reduced with the help of reducing agents .

[@HalalStudyTracks]

​@@Aarush1-INDIANEXO-LHey,can u solve my doubt? See at anode ,Impure copper loses 2e and these 2e move towards towards cathode where the copper (copper after its gets refined) gets eventually deposited and gets 2e which were released by itself at anode.So how is the reaction correct? Like reactant at anode and product at cathode is just the same.

[@Aarush1-INDIANEXO-L]

@@HalalStudyTracks I did not get your question but here is a simple way to explain electrolytic refining. once electricity is passed in the soln , the electrolyte (soln) breaks down into its constituent elements for eg take cuso4 electrolyte for refining, which then breaks into cu2+ and so4- ions. the cu2+ ions(of the electrolyte) will now move towards cathode (the strip containing pure metal) . Because these ions moved there ,the amount of cu2+ ions in the electrolyte will of course get decresed. and because they got decreased the ions of cu2+ from cathode(impure metal strip) will start coming off the cathode and come into the electrolytic soln to maintain the amount(volume) of the electrolytic soln

[@GURUPROMAN]

​@@HalalStudyTracksthat's what we want as we pass electricity they energize and lose 2 elections anode and cu2+ ion is released into soln and the cathode will be more electronegative by having more electrons will attract cu2+ ions. The products are the same but the places are different right i hope u got the answer.

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So we'll explained.. Thanks a lot for clearing concepts

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The ending question really cleared all the doubts 😊

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Exactly what I am looking for. Please how can I get complete videos of extraction o metals for offline use

[@sakshigaklhar2173]

Thank u sir,, you explained it wonderfully

[@decodingfinance5898]

Why does Copper at anode lose 2 electrons?

[@dharagautam5655]

amazinggggg thankyou sir for this wonderful class

[@gurnimitsingh9416]

That was just marvelous

[@ashokkumarmannepalli7226]

Very helpful, please tell me what happened to sulphate ions

[@nsowdkar]

Sir what would would happen when half of the metal in electrolyte becomes over and will copper be deposited only in the cathode present in electrolyte or also above it ?????

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[@AashishKumar-hb3iw]

I have seen many videos on electrolytic refining but this is the best of all as compared to other 🎉🎉😂😂😂

[@gitabeniwal3965]

At first I was not able to understand but you explain too much nice sir it is too easy for me now thanku so much sir

[@navjotsayal1690]

Is it correct? I mean what is the use of electrolyte of same metal. Isn't the electrolyte dissociates first ?

[@themanwithapan8649]

I have a question - if you were doing this process at a large scale, does the size of the cathode matter? If you had a huge cylinder of an impure metal as the anode, but an extremely thin wire of the pure metal as the cathode, would the process still work?

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Knowing concepts Is enough.....

[@themanwithapan8649]

Kiran Bhat buddy I’m here to learn stuff, not half-ass it for the BOARD’s

[@kiranbhat4902]

@@themanwithapan8649 OK self proclaimed metallurgical engineer let's see who scores more in boards....

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Amazing explanation

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Thank you sir now I understood clearly

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Wow logical explanation tq sir

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Greatest video ever !

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[@ArbindKumar-oy3vt]

very good explanation.😃😃

[@shaikgaleebsha5835]

Excellent explaintion

[@evileye17]

I have a doubt... Is it necessary to use sulphate salt? I mean can i use copper nitrate in this set up?

[@status6421]

U can use copper nitrate, but sulphate salt is easy to reminder during exam, we just have to use acid of that same element.

[@aabishegaabi6047]

Well explained sir. Thank you

[@nandhanampatiprakash8191]

😊 I can understand easily Thanks a lot

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Thank you Khan Academy..

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Superb explanation sir

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Very well explained.

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thank you , it help me a lot .

[@rahulsingh-pf5xn]

Best teacherrrrrrr, explain each conditions!!!!

[@rohanmagar7418]

I have one question. What if impure electrode loses some Fe2+ ions , will they deposit on cathode? (Talking about purification of Cu)

[@skullbee5269]

No matter which metal you take for Purification ... It will breakdown in charged ions and attract towards cathode .... But If u take iron impure ore and try to pure it .... u have to take Pure metal of Iron and acidified Iron sulphate solution ..... But in this case as u said .... Iron layer will get deposited on pure copper if solution is acidified Iron sulphate

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Just a 🎉Wow !! Lecture

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Excellent explaination sir.. Keep up thank you sir

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[@princekumar-tx9ti]

Can we use this to make alloys

[@bidishanag4198]

why would the copper atom in anode lose electrons ?please tell me

[@The_sazia]

I want also know this

[@skullbee5269]

Its due to Electric current which break Impure copper into Cu^2+ and 2e^- .... thus those electron move towards positive terminal Hope you get it 😉

[@flgnsngh]

Excellent. Thanks

[@prathikshasrprathikshasr-fy2xs]

Sir , I had doubt that At anode containing impurities, ( it means it contain any compound) if it is always loose Cu²+ ions My question is that An electro rod at anode loose any other compound what would happen ???

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Very much helpful sir 👍🙂

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Its great 🙂one

[@AvniSingh-f7w]

The explanation is best sir but we write ions as Cu2+ not Cu+2 ...

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Best lesson ever on you tube

[@sunildas4625]

Super explanation 👌

[@magicofbreak9540]

So how pure copper was obtained in the first place?

[@tamizharasiramesh3227]

Very nice explanation

[@rudrabrahmbhatt9925]

👐 Thank You so much SIR

[@meghasharma7746]

Sir I have a question, H ions generated due to acid will also migrate towards cathode , so the copper obtained won't be contaminated with hydrogen?

[@faxedits8]

Did u get the answer

[@faxedits8]

Or in my opinion As it is said that copper is 99% pure so 1 % are that impurities H2SO4 is very low in quantity here

[@meghasharma7746]

@@faxedits8 yes sir . This can be the case . Also I read somewhere that out of the two ions only one migrates and other one is left behind . So this may also be the case, that out of copper and hydrogen ion, only copper ion migrates and not the hydrogen.

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I feel enlightened

[@pree_bird]

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it is really useful

[@kiranfemura6106]

what happen if you take another metal salt?

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Fabulous explanation

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Thank you ☺️

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Thank you so much sir

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[@parcydwr2]

Does anyone know if this will work with Indium?

[@nishaxib4434]

@khanacademy due to metallic bond , a solid block of metal does not contain neutral atoms but it contains cations and sea of electrons So electricity will not produce cu ions here Also electrons do not travel back to the source of emf, if it does then it will damage the source

[@Anshuman296]

Lovely

[@saswathjain]

Super 👍🏻