The chief ore of aluminium is bauxite which mainly contains Al2O3.2H2O. The ore is initially purified before aluminium is extracted electrolytically. a) Identify the main impurity...

      

The chief ore of aluminium is bauxite which mainly contains Al2O3.2H2O. The ore is initially purified before aluminium is extracted electrolytically.
a) Identify the main impurity associated with this ore.
b) Sodium hydroxide solution is used in the purification process. State its role.

  

Answers


Kavungya
a) Iron (III) oxide (Fe2O3)
b) To react with amphoteric aluminium oxide to eliminate iron (III) oxide
Kavungya answered the question on May 24, 2019 at 08:34


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