Hey! I have a question...
In the production of Aluminum, Sodium Hydroxide is used to separate Aluminum Oxide from the impurities in bauxite ore. The Main impurity in the ore is Iron(3) Oxide. Aluminum Oxide is an amphoteric oxide whilst Iron(3) Oxide us a basic oxide.
Suggest how these two oxides can be separated by the addition of aqueous Sodium Hydroxide.