IGCSE Chemistry Revision - 24 - Extraction of Aluminium

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This video goes into detail about the preparation and electrolysis for the extraction of aluminium from the initial natural resource bauxite.
In addition, I also discuss the economic and environmental issues that relate to this process and hence show the importance of recycling aluminium.
Timestamps:
0:00 Introduction
1:32 Bauxite (raw ingredient)
2:30 Why electrolysis? - Reactivity Series
3:06 Electrolysis Methods
3:24 Step 1 - Sodium Hydroxide Treatment
4:05 Step 2 - Precipitation
5:02 Step 3 - Formation
5:45 Step 4 - Electrolysis
9:15 Step 4 - Economic Considerations
11:16 Key Equations
I hope you enjoy this video and goodluck on your revision!

Опубликовано:

5 авг 2024

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Комментарии : 45

@SimpleScienceProductions 6 лет назад

I'm very very sorry for saying "Aluminium Hydroxide" instead of "Aluminium Oxide" multiple times in the 3. Formation slide at 5:23, so beware of my mistake. However, THE SLIDES ARE CORRECT. Please forgive me 3: - Nhan

@gomugomutree6075 4 года назад

Mr. Simple Science, i think in the Formation slide at 5:23, in the chemical equation, the Al(OH)3 should be 2Al(OH)3

@abdulmoeed5638 3 года назад

@@gomugomutree6075 yes u r right

@djsdir207 Год назад

@@abdulmoeed5638 yep

@djsdir207 Год назад

aslo at 8:02 you said cathode instead of anode

@millie1414 4 года назад

Hope this helps this is basically a summary of what goes on in the extraction of aluminium from the bauxite. Xx 1. Aluminium oxide is dissolved in molten cryolite 2. Graphite casing inside metal casing (cathode) 3. Aluminum (Al^+3) attracted to the negative cathode and gains electrons Al^+3 +3e ---> Al (reduction) 5. Aluminium sinks because it's more dense. 6. Oxygen forms at the anode 7. Carbon also forms there making CO2 Overall in the electrolyte: 2Al2O3--->4Al+3O2

@nouraattia452 4 года назад

Thanks

@annymus4502 4 года назад

Thanks

@bactayyt5013 4 года назад

thxs

@deborahhackman9820 4 месяца назад

Thanks

@ayaalmanfud3207 3 года назад

During oxidation at 8:12 wouldn't oxygen require 4 electrons since its diatomic?

@ammitante 6 лет назад

yay! new upload!!!! :D

@cookiesandcream3953 6 лет назад

At 8:06 you said that at the cathode the Oxygen ions will be oxidized? But doesn't oxidation take place at anode??

@yussufpepe6767 6 лет назад

U r the best

@mariamhaddad7605 4 года назад

Is this both tha Bayer and Hall-Herault process?

@sarwarn2107 6 лет назад

I don't think in industrial process they do purification process (steps 1, 2 and 3). The aluminium oxide is already exist in the raw mineral. The steps 1, 2 and 3 add more cost to the process especially the heating process in step 3.

@mwanahamishassan1890 5 лет назад

Sarwar Nezar Okay thank you

@haishrheenarheena3795 3 года назад

Nice work. Tq

@immanuelimms1037 2 года назад

Thanks sir ,I know understand

@user-xv9jk7md8j 8 месяцев назад

Thanks teacher 😊

@xenguyen9616 5 лет назад

oh nice

@jamiiforamhezron7814 6 лет назад

Thanks

@mariahassan3875 6 лет назад

you also said cathode instead of anode at 8:02

@alvira7640 3 года назад

thankyouuu

@rishikesav4437 6 лет назад

Buddy,,@5.07 it is said as sodium hydroxide while it really is aluminium hydroxide

@rollzfn7958 2 года назад

Thx

@benshapiroslawnmower1084 4 года назад

yo thx dude

@BenitaOFlade 2 года назад

NaAl(OH)4 is called Sodium aluminate(lll).

@sajidsajan631 3 года назад

Hiii awesome heating betwn O2 and al

@orielbaptista6514 6 лет назад

why is sodium hydroxide used?

@jamiiforamhezron7814 6 лет назад

NaOH is used so as to form a soluble complex compound

@SabrinaXe 5 лет назад

Because sodium hydroxide is a base so the aluminum oxide which is an amphoteric, reacts or dissolves in the sodium hydroxide forming sodium aluminate(NaAlO2). The impurity which is iron oxide, is a basic oxide so it won't react or dissolve in sodium hydroxide since they're both bases so iron oxide will remain as a solid. As for sand(silicon dioxide) it is an acidic oxide BUT it is too unreactive

@SabrinaXe 5 лет назад

To sum it up, sodium hydroxide is used to remove the impurities such as sand and iron oxide present in the bauxite ore

@yussufpepe6767 6 лет назад

Thank u

@chidoziegodwin1626 Год назад

thanks so much..

@cindylo8505 6 лет назад

First!!!

@SimpleScienceProductions 6 лет назад

yay!

@danielrominov4037 6 лет назад

wow this was very helpful, can you make a video on the Dow process (preparation of Magnesium).

@toph8949 5 лет назад

It's really good its just that you keep touching your mic with your lip and it changes the volume of your voice,so please try not to do that in the next video, thanks

@gullafshan6040 4 года назад

The vedio was well prepared but the subtitles didn't let me read the equations below them ....so plz don't add subtitles or make another way for subtitles so that we may read the equations as well

@gomugomutree6075 4 года назад

dude just turn off the subtitles

@gullafshan6040 4 года назад

@@gomugomutree6075 I really didn't know that it could be possible...but thanks for this info