How Does Electroplating Work | Reactions | Chemistry | FuseSchool


Today before starting the class i would like to introduce a new website where you can watch live sports alhootship.rf.gd Electroplating is the process of coating one metal object with another it works by electrolysis Which is when electricity is used to drive a chemical reaction? We’re going to look at why you’d want to electroplate how it works and various conditions that need to [be] considered So why would we want to do electroplating metals, maybe electroplated for aesthetics protection or both? Aesthetics might involve making a metal shinier or giving it an attractive color by coating for example jewelry is often plated gold or silver a Metal coating can be used for protection as it may help resist corrosion Rusting or just general wear and tear car rims are electroplated for both shininess and protection Chromium commonly known as chrome nickel tin zinc and cadmium are often used to play copper iron and steel objects tin cans are actually made of steel, but [have] a thin tin coating and White the astronaut who made the first American spacewalk in 1965 was wearing a gold-plated visor to protect his eyes from the solar radiation so how does electroplating work an Electric current is passed through a solution that conducts electricity Could an electrolyte to create this current two electrodes dipped into the electrolyte solution and connected to a battery or power supply So we end up the set up that looks something like this When the current is turned on the electrodes gain a charge The positively charged electrode is called the anode and the negatively charged electrode is called the cathode The electrodes and electrolyte are carefully [chosen] based upon what metal you are plating with [if] you want to copy plate another metal you will use a copper [based] Electrolyte solution and Have a copper anode the copper for the plating comes from the electrolyte solution which in turn has it stops replenished by the copper Anode Want to watch live sports visit: alhootship.rf.gd We want to copy place and brass so we have a copper anode a brass cathode and a copper based solution for the electrolyte So copper sulfate solution Copper sulfate Solution Contains blue Copper ions and Colorless sulfate ions The Copper ions are positively charged and so attracted to [the] negatively charged brass cathode the Copper Ions deposit onto the brass producing the thin copper plate The positively charged copper ions gain electrons, which is known as reduction? The Sulfate ions are negatively charged and so are attracted to the positively charged Copper Anode The current supplied to the anode causes the copper atoms to oxidize which is lose electrons and then dissolve into the electrolyte solution So the copper ions move from the anode to the cathode in the solution and the electrons move from the anode to the cathode but along the wire The Copper Anode bug gradually dissolves to replenish the copper ions in the electrolyte solution So the solution stays at the same concentration If another matter was used at the anode then the copper sulfate [solution] would get paler or less concentrated so just remember that oxidation the loss of electrons takes place at the Anode and reduction the Gain of Electrons takes place at the cathode So few other things to consider in electroplating the speed at which electroplating requires depends only upon the strength of the electric current a Stronger current increases the speed at which the ions and electrons move through the circuit speeding up the plating process One way to increase the current is by increasing the concentration of ions in the solution It is also important to choose your metals carefully in electroplating not all metals [will] alloy with each other for example Steel has to be copper plated and then silver-plated because it will not form a direct alloy with silver There are also environmental concerns associated with some metals Chrome plating for example creates waste materials which are dangerous to humans and animals? Wears products have to be treated accordingly to make sure they are safe which can be very expensive and finally most importantly For current to flow the ions need to be able to move so the compound must be Molten or dissolved in a solution So in conclusion from this video you should understand how electroplating works using electrolysis When the current blows the positive ions in the electrolyte solution move Towards a negative cathode where they gain electrons which is reduction, and this is what causes the plating to occur at the Anode the current causes the metal atoms to Lose electrons and dissolve into the electrolyte solution The electrons which the metal atoms lose flowed back to the power source and around to the cathode Losing electrons at the Anode is known as oxidation So just remember we have reduction at the cathode and oxidation at the anode and that’s electroplating you

59 thoughts on “How Does Electroplating Work | Reactions | Chemistry | FuseSchool”

  1. Good explanation .is one circuit can plate one component each or can accommodate more component ?pls explain

  2. hey there I am thinking on doing some electroplating… could I skip the use of acids?? because I truly don't want to use acids…

  3. At the cathode, if the element is more reactive than hydrogen, can it still gain electrons, or is hydrogen discharged? (When dissolved with water) My teacher was not clear!!

  4. Still one question remaines in my mind. Please do reply of it. If the work of current (electrons) are just to provide electrons to Cu+ ions near cathode then all the electrons will be used up in that process itself and no electron will be left to flow in the elctrolyte from cathode to Anode…Then why we have used an electrolyte?

  5. Amazing video! Helped me so much! My teacher literally spent around two weeks to explain this to us but we still didn't understand, you made me understand it in less than 6 minutes! XD. Thank for this wonderful video!!

  6. How do electrons flow at 2:40 away from the positive end of the battery? I thought they could only flow towards the positive end cos of opposite charges. Same thing when the electrons are transferred from the anode to the cathode at 3:04 I'm baffled

  7. Covalent chrome is very, very toxic… fyi= burning or heating gaurdrail or other galvanized materials, releases a quite toxic fume which can make people very sick. I've see people cooking on galvanized corrugated steel roofing sheets. Tried to tell them, they laughed at me, and then fed their children.

  8. Oh yeah, if my teacher back in school was blessed with your wonderful accent, i would have learned alot more…i think. 😘

  9. This was a totally eye opening experience for me…..I had a little understanding about
    Electroplating but I can teach in school now!!…lol

  10. Is the thickness of plated layer the same on the whole surface of the cathode? We know that the electrical current regularly goes by the easiest and shortest way. So if the piece of jewelry has variable thickness, the current will preferentially go to the solution via the thinnest parts (those having less resistance), thus plating them better, while other parts of the jewelry may not be plated at all. Does the shape or thickness of the cathode matter? By cathode i mean the detail that is plated.

  11. What causes the plating to remain bonded, in the long term, to the cathode? Why doesn't it just slide of like a glove when current is removed?

  12. Guys(nerds,chemists…etc.), I had a condensed milk can then I opened its top with a can opened then …
    I did electrolysis on that. I got weird colors!
    There was orange, black/dark gray, white, and navy(dark blue) colors of solution/residue.
    The orange surfaced and kept on floating, the rest sank.
    What are these compounds/elements?
    I ain't sure but I am guessing tin is the orange one that was floating, maybe it is tin oxide or something.
    What you think? Thanks in advance.

  13. the copper ions in the solution get attracted to the cathode .the electrons then enter the cathode to make the copper ions neutrally charged.are these electrons supplied by the anode?

  14. You explained that for metal to be gold plated, it has to be fist plated with copper right? My question is that can this be reversed?

  15. Thx alot for keeping it simple and at the same time short to save our time to revise. I really appreciate that. Btw I watched several fo ur videos and they're the reason I understand some lessons for my EOT examination.

  16. I didn't get the electrons moving from the battery bit . . other than that everything clear, but the electrons come from where and why and. . . i just don't get it.

  17. very very thank you I am so greatful by watching the vedio and you cleared my all doubts thank you so much again thanks you so much again

  18. Thanks, I'm learning 8th grade physics and this really helped me. Do you guys have a playlist from the basics to more complex subjects in sequence? i really need it in order to grasp the subjects easily.

  19. I don't understand the copper depositing onto the brass, that's just where they are reduced. Why do they have to stick to the cathode? Surely they would just sink to the bottom?

  20. Can you tell me the chemical used to coat copper coil ? Copper coil is used in many products, such as the induction motor in electric cars. The copper coil doesn't short circuit when they are wound close to each other or even one layer over another. So what is the chemical used for that?

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