In the Hall -Heroult process, aluminium is formed at the cathode. The cathode is made out of :

 

  • Option 1)

    Copper 

  • Option 2)

     Platinum

  • Option 3)

    Carbon

  • Option 4)

    Pure aluminium 

Answers (3)
A admin

 

Hall and Heroult Process -

Use to extract aluminum. A fuse mixture of alumina (20%), cryolite (60%) and fluorspar (20%) is electrolyzed using carbon electrodes.

- wherein

Cryolite makes Al2O3 conducting, fluorspar decreases the melting point of alumina

 

As we have learned that in  the Hall -Heroult process,cathode is made up of caarbon


Option 1)

Copper 

Option 2)

 Platinum

Option 3)

Carbon

Option 4)

Pure aluminium 

Pure aluminum 

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