Advertisements
Advertisements
Question
Aluminium is extracted from its chief ore bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Write three balanced equations for the purification of bauxite by Hall's process.
Solution
\[\ce{ Na3AlF6 ⇌ 3Na+ + Al3+ + 6F-}\]
\[\ce{CaF2 ⇌ Ca2+ + 2F-}\]
\[\ce{Al2O3 ⇌ 2Al3+ + 3O^{-}_{2}}\]
APPEARS IN
RELATED QUESTIONS
Answer the following questions with respect to the electrolytic process in the extraction of aluminum:
Identify the components of the electrolyte other than pure alumina and the role played by each
For the substance given below, describe the role played in the extraction of aluminium.
Sodium hydroxide
Explain with reason:
Carbon can reduce lead oxide but not aluminium oxide.
Name the constituents of Duralumin.
For graphite, explain its significance in the extraction of aluminium.
Aluminium is extracted from its chief ore, bauxite. The ore is first purified and then the metal is
extracted from it by electrolytic reduction
Mention one reason for the use of aluminium in thermite welding ?
For the substance listed below, explain its role in the extraction of aluminium: Cryolite
In order to obtain one tone of aluminium, the following inputs are required:
4 tones of bauxite, 150 Kg of sodium hydroxide and 600 Kg of graphite.
The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (II) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
In construction work, why is the alloy of aluminium, duralumin used rather than pure aluminium.
Answer the following question:
Write the chemical formula of one main ore of iron and aluminium.
The compound that is not an ore of aluminum is ______.
