Electrolysis of copper sulfate CuSO4 (aq) using graphite and copper electrodes

Electrolysis of copper sulfate CuSO4 (aq) using graphite and copper electrodes - GCSE Chemistry

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ChemJungle

Күн бұрын

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Пікірлер: 100

@kat1070 2 жыл бұрын

i don't normally comment on videos especially as this was made years ago but i have to say that this is the most helpful video on electrolysis i have seen so far and trust me i have been watch ALOT ahaha

@dog360 2 жыл бұрын

probably one of the only educational youtube videos i’ve ever found helpful!

@debra6968 3 жыл бұрын

Wow, superb explanation. Nicely penetrating and sinking into the system. Thanks so much for this video. Full of passion and commitment. Seems you have done your HW, so well planned and precise. Loads of love from Sri Lanka. God bless you :)

@magnuswootton6181 3 жыл бұрын

whatever you do, if u actually do this electrolysis stuff watch out for poison gas emission!!!

@ruba588 4 жыл бұрын

in love with your channel!! Thank you so much for your videos

@golammorshed7260 3 жыл бұрын

OMG I had this one confused for almost months and you made it clear within 5 minutes TYSM :)

@yashkhandelwal641 3 жыл бұрын

The video was Good and really explained clearly and properly! Thank u so much!

@omkarpawar1594 Ай бұрын

Loved the mehandi on your hand and the lecture too, Thanks a ton.

@omarmoustafa6672 5 жыл бұрын

That was really helpful!!! Thank you so much!🙏🙏🙏

@sahilagarwal6601 4 жыл бұрын

Demn she has got mehendi on

@yashkhandelwal641 3 жыл бұрын

Lmaooo

@Rarafb2761 Ай бұрын

What I focus on instead of trying to understand chem... 🥲

@samsononi7164 2 жыл бұрын

Amazing explanation from Henry and Esther Thank you

@mochimoy8865 3 жыл бұрын

The Explanation was very clear, thank youuuu

@angel-nr3vg 3 жыл бұрын

perfect explain it is so complete .it make me totally understand.thanks

@SethuChandra 3 жыл бұрын

omg explained SO WELLL

@varpilajain5895 3 жыл бұрын

hey sis...am in luv with ur channel completely...my doubts are cleared explicitly. i had doubts abt explanation on preferrential discharge but by seeing ur video..i am delighted...keep doing well| "GOOD DAY"!!!!!

@mariaaxp0 2 жыл бұрын

i legit love you thank u

@ivygracelane 9 ай бұрын

you have saved my life thank you

@drsirmechemistrymaster 2 жыл бұрын

Good work... Coincidentally I have done the demonstration experiment for this on my channel.... I see we are in tune... Thank you madam

@MuhammadHassan-jq8jp 7 ай бұрын

What a video, honestly teach me chemistry I'd pay anything to study from you

@SalsaKingoftheApes 2 жыл бұрын

Very clear, super stuff! Mr J

@ChemJungle 2 жыл бұрын

Glad it was helpful!

@arty6287 Жыл бұрын

GOAT video love u

@turboslayer9473 Жыл бұрын

Thank you so much Really helpful

@sengkathirparri9311 Жыл бұрын

Thank You So Much !

@mingiiyaa5673 3 жыл бұрын

Thank you so much ✨✨

@cryfan6828 3 жыл бұрын

Thank you very much!

@kurulusxdestan 2 ай бұрын

thankyou so much for this ❤❤❤❤❤❤

@Alex-xq5qz Жыл бұрын

This help me thanks ( from a prepa french student )

@Oli-vj4pi 4 жыл бұрын

thanks so much

@gikscollections6280 2 жыл бұрын

Good work

@minkhant1683 Ай бұрын

Thanks alot!

@energyforever720 2 жыл бұрын

@chemjungle i heard you say the sulfate never comes out, but when i did electrolysis of copper sulfate a strange yellow thing appeared. I was using a 5 volt power supply and graphite electrodes, which made it very clear to see the yellow thing on the dark black graphite electrode. Idk what it was but my guess was elemental sulfer. Any ideas why that happened?

@mechackkaba8578 3 жыл бұрын

Well done

@manishkumartiwari6762 2 жыл бұрын

Please make videos on the whole chemistry part of 11th and 12th.

@alcurist 2 жыл бұрын

THANK YOU

@tanushbedi2667 2 жыл бұрын

thank you so much

@dribrahimel-nahhal2477 2 жыл бұрын

Thanks for this vid

@galaxy_tv104 Жыл бұрын

1:22 Can you explain why sulfide never gets discharged? is it because it has a higher reduction potential?

@truth3137 2 жыл бұрын

Great video!

@ChemJungle 2 жыл бұрын

Thanks!

@nelsonandong263 Жыл бұрын

Good job

@ChemJungle Жыл бұрын

Thanks :)

@chandakatongo5992 10 ай бұрын

Thankyou sm

@ChemJungle 10 ай бұрын

You’re welcome 😊

@candyfairy3974 3 жыл бұрын

And what amp/volts are necessary?

@abigalebailey182 3 жыл бұрын

What was the amperes that was used ?

@abhilash5565 4 жыл бұрын

Good

@wilsonbashaija2293 2 жыл бұрын

after the copper from anode goes to cathode and the sand sinks, what is that small thing that is left after copper refining, that is being compared to the recent big pure copper

@ChemJungle 2 жыл бұрын

If you let the electrolysis run forever then it would stop as soon as the anode stopped conducting electricity because your circuit would be broken. There might still be very small amounts of metal left but it's mostly going to be the rock it started as remaining :)

@varpilajain5895 3 жыл бұрын

i also had a doubt...anode attracts negative ions..but in this case the copper atom turns into ions and gets discharged....and on what basis does copper gets oxidised in preference with sulphate and hydroxide ion....could u pls clear my doubt

@rosemarychacko3690 3 жыл бұрын

Plz mam I am also confused

@DaveFer 4 жыл бұрын

Hey now. Thanks for this educational video. I've been doing chem experiments with my kids while we're quarantined and I have question perhaps you are uniquely qualified to answer: I have several grams of Cu that we precipitated and dried from a reaction of CuSO4 + Al. It's a tiny amount and probably contaminated. I'd like to use electrolysis to purify it and I have copper thread that I can use as an cathode (anode?). I can weigh the precipitate and the copper thread prior to start. And I'd like to show my kids how all the copper in the precipitate is purified and deposited on the copper thread ... both visually and by weight. My question is, which electrolyte should I use, CuSO4 solution? Acetic acid? NaCL solution? Which electrolyte WILL NOT donate Cu or any other atom to the cathode? Will the CuSO4 donate to the cathode? I'll probably do this in a large test tube. I'll try using a graphite rod (pencil "lead"?) on one side and copper thread on the other. (I'll think the pencil graphite will conduct ... I'll test it.) Here's our playlist. You're input would be highly valuable. kzfaq.info/sun/PLikL-gQhJ0DmknULDIeGei3l2Q__dEfI7

@ChemJungle 4 жыл бұрын

Hey! I think you've probably got an amount of impure copper from your reaction. In order to make this work you need to use your impure copper as the anode and your pure copper as the cathode. If your product isn't suitable to be used as an electrode then you might struggle to purify in this way. At home, I wouldn't use any of these electrolytes though - CuSO4 will deposit Copper from the solution, acetic acid doesn't conduct well, NaCl will produce Chlorine as a byproduct which is super toxic.

@hixe7399 4 ай бұрын

what happens to the SO42- ions and H+ ions?

@ChemJungle 4 ай бұрын

They stay in solution :) So you're left with sulphuric acid in the solution

@leslieedirisingha5333 Жыл бұрын

Please explain why in the instance electrolysis of aqueous cuso4 using copper electrodes the anode reaction becomes copper oxidation process 😭

@ChemJungle Жыл бұрын

Because copper is more easily oxidised than the hydroxide ion or the water that's present. It's always the thing that's most easily oxidised that will lose electrons :)

@aashishgottumukkale3043 4 жыл бұрын

How about carbon electrodes? Do they get involved?

@ChemJungle 3 жыл бұрын

Nope :) Graphite is a form of carbon - these electrodes are inert in this scenario

@covid-21delta99 2 жыл бұрын

Graphite (Carbon) Electrodes only get involved at high temperatures with Oxygen and some other Elements...

@magnuswootton6181 3 жыл бұрын

watch out using electrolysis with sulphates, cause u might get mustard gas. it is actually magnesium sulphate that does it, copper sulphate doesnt, cause of extra complications, its not a simple model.

@lahiruperera3805 7 ай бұрын

Some people write anode reaction like this 2H2O ->O2+ 4H+ + 4e What is the difference

@ChemJungle 7 ай бұрын

Both processes happen, and both make the same products so in most syllabuses you can write either answer and score the points... The water one you have here is a little more "correct" as the water would be in higher conc than the OH- so would be more likely to oxidise (the last gcse syllabus I taught wanted the OH- one though hence why it's in this video!)

@williamtamale9469 3 жыл бұрын

Supper gal....only the dull wouldn't understand yr crystal klear explanation

@TheCerberusInferno 4 жыл бұрын

What gases are produced in this reaction ?

@ChemJungle 3 жыл бұрын

You get different products depending on which electrodes you use

@krivansemlani7984 3 жыл бұрын

mehandi laga ke rakhna doli sajane ke rakhna

@inkosiivumilethapelo3000 Жыл бұрын

Too fast. Had to watch the video many times

@krivansemlani7984 3 жыл бұрын

why coppaaa! why not copper?

@johhnylhandes134 3 жыл бұрын

lol she fitttt

@dylanjones9499 3 жыл бұрын

Pls speak in English next time ;)

@ssathiabalan 2 жыл бұрын

pls slow down with ur explanation, didnt pick up anything from the video. Im sorry. I didnt find this useful.

@waseemahmed5682 5 жыл бұрын

Really informative.... Good work....

@jitendraempire5627 6 жыл бұрын

Well explanation

@manalkhan5048 6 жыл бұрын

Thank you!

@ChemJungle 6 жыл бұрын

You're welcome :) hope it helped!

@chamodrashmitha7454 4 жыл бұрын

Thankyou very much madam

@DonaldSleightholme 5 жыл бұрын

can copper sulfate be used as a replacement for mercury in a Faraday motor 🤔🤷‍♂️

@antonisaristidoukokkinou9948 6 жыл бұрын

how does the copper ion go to the anode when the anode attracts negative ions and why in the half equation for the anode it doesn't have a positive charge but is simply its element? are you saying that it first got purified from the cathode and this whole time nothing was happening at the anode so it went to the anode to oxidise??? I'm a confused 16 year old help.

@ChemJungle 6 жыл бұрын

Eeeek I'm sorry this has confused you! The copper ions go to the cathode and get reduced to copper in both scenarios. At the anode, oxidation happens. There are a few things in the solution that could lose electrons: OH- SO4(2-) or the Cu in the electrode , but actually the Cu in the electrode is the most easily oxidised of the 3 options so it goes to Cu2+ in the solution.

@samina9131 4 жыл бұрын

@@ChemJungle why did copper lose electons just to gain it back

@ubinin7923 6 жыл бұрын

This helped a lot

@CLR-mx4bu 6 жыл бұрын

I don’t understand why the copper2+ becomes copper but the SO2- doesn’t become SO4? Why doesn’t the least reactive one always get discharged?

@krivansemlani7984 3 жыл бұрын

smart

@jailnet 4 жыл бұрын

OK, why was the solution copper sulfate present in refining of copper if we are not separating anything from the electrolyte?

@magnuswootton6181 3 жыл бұрын

isnt it copper coming out?

@jailnet 3 жыл бұрын

@@magnuswootton6181 concentration of copper ions remains constant in case of using pure copper as cathode and impure copper as anode. Explaination copper ions are both being removed and replaced at the same rate because formation (oxidation) of copper ions at anode happen at same rate of removal (reduction) of copper ions at form atoms at cathode. I hope this made sense

@covid-21delta99 2 жыл бұрын

You actually are separating Copper +2 ions from the Electrolyte which then gets reduced at the cathode to form Copper Atoms

@nellvincervantes3223 5 жыл бұрын

Why you choose the lower reactivity?

@shreyabhatia5507 5 жыл бұрын

^^??

@daemonk756890 3 жыл бұрын

If it's lower reactivity it is more able to receive an electron and therefore get reduced. It's like the opposite of how you explain the group 1 metals getting more reactive as you go down the group. The outer shell electron is further away from the nucleus so therefore it is more easily lost and the metals get more reactive.

@devanshimishra9969 5 жыл бұрын

What is the observation? When u used copper electrode in copper(||) sulfate

@ChemJungle 5 жыл бұрын

You would see the cathode getting bigger (still orange with the copper) and the anode getting smaller. The blue solution would stay the same colour as every Cu2+ that gets used up, another one gets released into the solution (if you have graphite electrodes it gets paler and eventually colourless). No change to H+/OH- concentration so no change to pH.