What Is Electrolysis | Reactions | Chemistry | FuseSchool

Electrolysis is electrical current flow through a liquid which causes chemical changes. Yes, you did hear that correctly Current flowing through a liquid. Now, not all liquids can conduct The liquid can be a molten Ionic compound Or a aqueous solution In either case It must be able to carry current Lets take a common example.. Table salt. If you heat sodium chloride to over 801 degrees Celsius It will melt The liquid will contain free flowing positive sodium ions and negative chloride ions This simply means that Sodium and chloride ions are free to move within the liquid’s sodium chloride positive ions are called cations negative ions are called anions Now consider putting two electrical conductors into the liquid Copper would be good, as it has a higher melting point Nothing happens to the ions at this point But if we connect the two bits of copper to an electrical cell or a power supply then things start to get interesting We do need to side step for a moment to look at electrical current in a metal from our lesson “behavior of metallic structures” we know that electrons in a metal aren’t bound to particular atoms They form a sea of electrons that can move easily If a potential difference or a voltage is applied across it This could be from an electrical cell Or a battery the electrons will begin to drift towards the positive terminal of the battery and this what happens when currents flow current is the movement of charge in this case, electrons now lets go back to our “molten sodium chloride” we’ve added our copper wires lets call them “electrodes” and now we will connect these two an electrical cell the electrons will start to flow in the wires and this will cause one electrode to become positively charged and the negatively charged this has an immediate knock on effect in the molten sodium chloride

100 thoughts on “What Is Electrolysis | Reactions | Chemistry | FuseSchool”

  1. thanks for helping me with knowing what electrolysis is and you helped me with my science fair project!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

  2. did someone else find that in one case electrons moved from ''-'' to ''+'' and in second from ''+'' to ''-''???

  3. In Some Books The Cathode Was Positive Charged Particle and Anode Was Negative Charged Particle I am Confused

  4. Excellent..Thank you. But the electrodes' charges at the 2:19 must be the opposite. The one on the left will be negatively charged and the one on the right will be positively charged.

  5. GOD BLESS FUSE SCHOOL. I'm sorry but I don't really like my teacher because of certain disputes and I do all the learning by myself. This has helped me a whole bunch and I'd love to thank the team at fuse school like srsly you guys are putting out amazing content.

  6. you said cations are attracted to the cathode surely the cations are attracted to the anode because it is a positive and negative charge?

  7. Hello! I am a Chemistry teacher and I was looking for interesting videos to show to my lecture group next week. I know FuseSchool channel is one of the best out there!

    For this particular video, I noticed a tiny error at around 2:14 min. The battery is placed the wrong way around with respect to the movement of electrons. (Same animation mistake at 5th minute)

    The battery is correct at 3:30min though. 🙂

    Thanks again for a great video!

  8. There's so many questions unanswered, like how exactly the mass goes to another. Etc, every single topic has this problem, yea, I get it, it's university level. But give us a basic explanation. An example is radioactivity, specifically decay. How does a neutron split into a proton and a electron. My teacher spent half an hour explaining it to me how it worked, and this stuff is deep. Time gains a direction, things come in and out, other shit like w bosons come in. But now it's easy to understand. Not shutting on your channel, but seriously, this is a problem for students, so teachers. Please explain why something happens, and don't just say that it happens

  9. You've just saved my chemistry GCSE. I haven't been able to understand this all year and I finally understand it the day before my exam 😅

  10. I did electrolysis of aluminum, in water/salt(brine) solution.
    It was amazing, got me some white matter, I think it is aluminum oxide(alumina), it got uses.
    Dunno how to extract from its solution, maybe using a coffee filter and washing several times to get rid of salt solution and left-overs.

  11. Doesnt the electron move out from +vely charged plate to the solution and to the positively charged plate and back to the battery? Is the electron flow shown in the video correct?

  12. could you tell me what :

    Is formed at a cathode and anode in a dilute solution?

    Is formed at the cathode and anode in a concentrated solution?

    Is formed at the cathode and anode in a aqueous solution?

  13. thanks for this video ,I was not knowing about electrolysis and my exam was there . thank-you so much👍👍👍👍👍

  14. There is another mistake…first at 1:00 u ppl have told that +ve ions r called cations n -ve ions r called anions, and at 3:25 u ppl have told it d other way round….which one is correct?? But a very helpful video…

  15. Can you please explain me why at the open circuit potential it is said that the redox reactions are in steady state? On the surface of one electrode both reaction are ocurring? Why? Nice video, thank you very much

  16. Thank you so much …this video helped me to understand electrolysis in just 5:10 min which i couldn't understand for two years

  17. Hi, I just had a chance to go through your video and I really liked it. I think there’s a lot of potential turning this to be a professional online course using www.tyootr.com and you can reach to millions of students. You can also earn every time your course is sold. Become an Instructor for free and start earning today! Register here: https://goo.gl/HmBtgR

  18. I’ve been studying this for a term and never got it.. this 5 minutes video just made me understand so much more. Thanks!


  20. I love the videos but there is an error on this one. The subscript 4 is missing from the sulfate ions in the beaker

  21. Which direction do the electrons flow? Because in the video they are traveling in a clockwise direction, however, the cell direction keeps changing ( for example sometimes they are flowing from positive to negative and at other times from negative to posititve). Or does it not matter?

  22. Dude this is really great I’ve been looking for a good electrolysis video and this one was the best thx

Leave a Reply

Your email address will not be published. Required fields are marked *