Extraction of Aluminium from Bauxite
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- เผยแพร่เมื่อ 14 ก.ค. 2024
- A simple but detailed lesson on the extraction of aluminium from bauxite.This video is based on the O'level chemistry syllabus. It covers the uses and properties of aluminium, the purification of bauxite and the electrolysis of alumina. It is carefully created with beautiful animation to make it interesting to learners.
It is recommended for candidates preparing for the WASSCE, NECO/SSCE, NABTEB, IGCSE, JAMB and Post-UTME chemistry examinations
TIMESTAMP
00:00 - Lesson Title: Extraction of Aluminium from bauxite
00:13 - Objectives of the lesson
00:51 - Channel intro
01:26 - Aluminium is the 13th element in the Periodic Table and the 3rd most abundant in the earth’s crust
01:36 - Properties and uses of aluminium
01:58 - Sources of aluminium
02:10 - Purification of bauxite (Bayer Process)
02:19 - Constituents of bauxite
03:46 - Electrolysis of alumina (Hall-Heroult Process)
03:54 - The Hall-Heroult cell
04:11 - Functions of cryolite in the electrolysis of alumina
04:29 - Dissociation of alumina
05:01 - Reaction at the anode/Anodic half-reaction
05:21 - Reaction at the cathode/Cathodic half-reaction
05:51 - Overall cell reaction
06:07 - Challenges of Hall-Heroult process
06:46 - Call to action (CTA)
We would like to acknowledge and appreciate Imgbin.com and Pxfuel.com for the photo images used in this video, and the TH-cam Audio Library for the soundtrack
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Interesting lesson on aluminium extraction. Thanks for making this video.
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You've earned a subscriber. Simple,detailed and straight to the point, this is how videos on the internet should be!
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Thanks so much for this. You are a life saver...God bless you
We are glad it helped!
Now I know better, you guys are really wonderful. Keep up the good work.
Thank you! We will!
you have been super helpful, i really like your videos, keep up the good work!
Thanks for watching!🙏
Thank you
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thank you dawg
You are welcome, bruv! Thanks for watching!🙏
Thankyou for this✨
I like how you take it slow when explaining the process.
I understood everything
Thanks again!
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This is way easier to understand than my notes thanks guys
You are welcome!🙏
Thanks ya made it easier and simple for me 👏btw am watching dis before oneday to mi chemistry final exam
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thats great you gus are so awesome now i have a better understanding on the thing
Thanks for watching!
Best explanation
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good explaination and diagrams
Thank you for watching!
Nice video! Keep it up
Thanks, will do!
Thank you sir... Really impressive
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oh thank you prof i love the video it realy helped me in my exams and my gce
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Thanks
I get it
Thanks for watching!
Thank u so much sir
You are welcome, Dev! We are glad that you like it!
Thanks man ❤️🏆
Thanks for watching, bro!🙏
can i ask u why at 3:35 al(oh)3 doesnt react with naoh since according to my knowledge, al(oh)3 is amphoteric
Of course Al(OH)3 reacts with NaOH, but in a saturated solution of NaAl(OH)4, Al(OH)3 can be crystallized out of the solution when pure crystals of the hydroxide are added. We call it the ion concentration effect; that is, when the concentration of a particular ion is very high in a given solution, the ion will be precipitated from that solution.
@@TheScienceChefAcademy Can you please guide that i am making aluminum hydroxide on lab scale from bauxite then the difficulty is that of precipitation some says that if you will add excess water aluminum hydroxide will automatically pecipitated out kindly guide how i can precipate aluminum hydroxide
Can you please guide that i am making aluminum hydroxide on lab scale from bauxite then the difficulty is that of precipitation some says that if you will add excess water aluminum hydroxide will automatically pecipitated out kindly guide how i can precipate aluminum hydroxide
Add pure crystals of aluminum hydroxide to the saturated solution of sodium aluminate (III) and allow it to cool to room temperature. You will achieve your precipitation.
@@TheScienceChefAcademy Thanks for your reply can you guide me that the precipitate i will get after that are of which colour like light brown actually i want to produce aluminum sulfate from it
and please guide me i am doing my first reaction where can i get crystals of aluminum hydroxide
And can you guide me that i can add hcl to precipetate aluminum hydroxide
Thanku
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Thanks so much for this. You are a life saver...God bless you
AMEN! Thanks for watching!