Yes, agree. I use the term carbon to refer to the element the anode/cathodes are made from, rather than the specific crystalline form of carbon called graphite.
This is an educational video, why is that even significant. It is a meaningless micro detail which doesn't actually serve any educational purpose to the audience the video was meant for. What is important is the MASSIVE amount of current needed, due to the 3 electrons needed for every atom of aluminum.(Actually 12 electrons are needed for 4 Aluminum atoms)
Hi. Each half reaction needs to be balanced in terms on number of particles (atoms or ions) on each side and the total charge on each side. Once the half-reactions have been balanced, then if you need to combine to show an overall reaction, then the number of electrons in each half reaction must be balanced before adding them together (so that the electrons cancel). The cathodes reaction uses 3 electrons and then anode reaction releases 4 electrons. To balance this we multiple through each reaction to create the same number of electrons (in this case the lowest common multiple of 3 and 4 is 12). Therefore we want each half reaction to end up with 12 electrons. To do this you multiply the top one through by 4, and the bottom one through by 3. Does that help?
Graphite is just one particular allotrope of carbon, so in a sense it is saying the same thing. Carbon is the element that the electrodes are made from. The particular form of carbon (allotrope) is called graphite. Their shape and what they are treated with then is described in your book correctly. Hope that helps.
Hi Kosal. The electrons lost by the two oxide ions at the anode drift around the circuit and eventually would be used at the cathode for the reduction of the aluminium ions. These electrons are not 'lost' but simply form part of the overall flow around the circuit.
Hi. Basically the NaOH is used to purify the bauxite (in something called the Bayer process). The oxides of aluminium dissolve in the hot NaOH. The impurities (mostly iron oxides) don't dissolve and are removed by filtration.
Thanks! I've got assigned to a question that has not been explained to me but your video helped me a lot! It covered both the points that were confusing me! I'm so thankful for your efforts in making this video and in answering my question. All the best!
@@jeremygibbon7080 Well my country starts with E and ends in T, it has 3 pyramids and it faces the Mediterranean sea. Was it obvious enough? Or shall I mention that it has 7,000 years of history?
Just had to add the "indoctrination" to the political issue of "climate change" (wasn't it global warming) at the end, didn't you? CO2 is NOT a TOXIN. It makes the PLANTS GROW.
This video was very much beneficial for me
Thank you
good video, very informative
Thanks a lot for the video. I had a chemistry problem related to this process but this video gave a much better visualization.
I often watch your videos they are great 👍 you are in my you tube family. A present for you a sub
You are from which contry
South Africa
Sir,with cryolite, fluorspar is also you..
An additional information...
Thankyou so much
Thanks a lot sir. Finally the concept is clear.
Nice sir 👍😃😎
Simple effective and comprehensive explanation ,very nice
It helps a lot! thank youuu
Sir it would be great if you could come up with more such videos.
What topics would you like covered?
Thank u so much...nice explanation..👌
Really helpful
this helped me out so much! thank you
reallyy helpful
i love you Mr Jeremy Gibbon. i teach chemistry in my country, Iran . and i use your educational clip for teaching. i thank you a lot.
Very good video indeed but nowadays anodes and cathodes are made of graphite
Yes, agree. I use the term carbon to refer to the element the anode/cathodes are made from, rather than the specific crystalline form of carbon called graphite.
drins cans
just unprecedented
Thank you very much, this was incredibly helpful.
thank you for your simple ! and effective explanation.
Nicely Explained 👍
Very nice
Electrolysis voltage is not 6V! this is high for a modern day electrolysis cell which run at a voltage of al low as 4 V.
This is an educational video, why is that even significant. It is a meaningless micro detail which doesn't actually serve any educational purpose to the audience the video was meant for. What is important is the MASSIVE amount of current needed, due to the 3 electrons needed for every atom of aluminum.(Actually 12 electrons are needed for 4 Aluminum atoms)
Where is the co2 come from?
Tx
Why is it multiplied by four (5:00) plz someone exlain
Hi. Each half reaction needs to be balanced in terms on number of particles (atoms or ions) on each side and the total charge on each side. Once the half-reactions have been balanced, then if you need to combine to show an overall reaction, then the number of electrons in each half reaction must be balanced before adding them together (so that the electrons cancel). The cathodes reaction uses 3 electrons and then anode reaction releases 4 electrons. To balance this we multiple through each reaction to create the same number of electrons (in this case the lowest common multiple of 3 and 4 is 12). Therefore we want each half reaction to end up with 12 electrons. To do this you multiply the top one through by 4, and the bottom one through by 3. Does that help?
Thank you sir
helpful though
thank yooou
Solar cell panel used a lot of aluminum. And China is the top exporter solar panels of the world.
Along with cryolite , fluorspar is added
Maybe with cryolite floursper is added too (1:38)
I think you are right
thanks for the help! great video
In my book it says they used graphite as cathode and graphite rods dipped in molten mixture of electrolyte as anode?
Why u used carbon in this?
Graphite is just one particular allotrope of carbon, so in a sense it is saying the same thing. Carbon is the element that the electrodes are made from. The particular form of carbon (allotrope) is called graphite. Their shape and what they are treated with then is described in your book correctly. Hope that helps.
@@jeremygibbon7080 thank you☺
Helpful for students
Can the 4 electrons gained in the anode reactions be reused for the extraction of Al in the cathode reactions? If no, why?
Hi Kosal. The electrons lost by the two oxide ions at the anode drift around the circuit and eventually would be used at the cathode for the reduction of the aluminium ions. These electrons are not 'lost' but simply form part of the overall flow around the circuit.
thank you so much
very helpful
Good Video
What do you mean by "Bouxite is treated by concentrated sodiumhydroxide (NaCl)"?
Vasek Nentwich it is done in order to get alumina Al2O3
Sodium hydroxide is NaOH not NaCl
+VN
NaCl is Sodium Chloride = (kitchen/edible) salt.
en.wikipedia.org/wiki/Sodium_chloride
Hello Mr, I have got a question and I wish you could help me.
Why is NaOH used?
Hi. Basically the NaOH is used to purify the bauxite (in something called the Bayer process). The oxides of aluminium dissolve in the hot NaOH. The impurities (mostly iron oxides) don't dissolve and are removed by filtration.
Thanks! I've got assigned to a question that has not been explained to me but your video helped me a lot! It covered both the points that were confusing me! I'm so thankful for your efforts in making this video and in answering my question.
All the best!
@@bedoe9684 Glad it was helpful. Where are you in the world?
@@jeremygibbon7080 Well my country starts with E and ends in T, it has 3 pyramids and it faces the Mediterranean sea. Was it obvious enough? Or shall I mention that it has 7,000 years of history?
@@bedoe9684 Fantastic! I've travelled there many times. All the best.
I didnt get this at school but thank you I understood it finally!
Video quality is soo good ,can clearly shows the effort put to compose and the knowledge is to the the point .
Just had to add the "indoctrination" to the political issue of "climate change" (wasn't it global warming) at the end, didn't you? CO2 is NOT a TOXIN. It makes the PLANTS GROW.