GCSE Chemistry - Electrolysis Part 2/3 - Electrolysis to Extract Metals From Oxides

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*** WHAT'S COVERED ***
1. Extracting reactive metals from their oxides.
* Comparison between reduction with carbon and electrolysis.
* Explanation of why electrolysis is necessary for metals like aluminium.
2. The process of electrolysis for molten ionic compounds.
* Requirement for molten state to ensure mobile ions (electrolyte).
3. Electrolysis of Aluminium Oxide (Alumina).
* Detailed steps for electrolysis.
* Reactions occurring at the electrodes.
* Writing and understanding the half-equations for the anode and cathode.
* Application of the OIL RIG mnemonic.
* Deriving and balancing the overall chemical equation for the electrolysis of aluminum oxide.

*** EXAM BOARD INFO ***
This video is suitable for:
- Both tiers (except the end which is for higher tier only from 4:15)
- All exam boards
- Triple and combined science

*** CHAPTERS ***
0:00 Intro: Extracting Reactive Metals
0:35 Reduction with Carbon vs Electrolysis
1:06 Why Electrolysis is Needed for Aluminum
1:59 Preparing Molten Aluminum Oxide (Purification & Cryolite)
2:40 Electrolysis Setup
3:19 Reactions at the Electrodes
4:18 Half Equations & OIL RIG
5:26 Overall Equation

*** PLAYLISTS ***










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