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प्रश्न
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 an equation for the reaction which takes place at the anode during the extraction of aluminium by the electrolytic process.
उत्तर
O2- - 2e- → [O]
[O] + [O] → O2
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संबंधित प्रश्न
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
Aluminium is a more active metal than iron, but suffers less corrosion. Why?
Explain with reason:
Carbon can reduce lead oxide but not aluminium oxide.
Give reason for the following:
Aluminium oxide cannot be reduced by carbon.
Name the ore from which aluminium is extracted.
For the substance listed below, explain its role in the extraction of aluminium: Bauxite
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.
(i) Name the process used for purification of bauxite.
(ii) Write the equation to show the action of heat on aluminium hydroxide.
Name the following :
The compound formed by the reaction between calcium oxide and silica.
Name a metal which is found abundantly in the Earth's crust.
The compound that is not an ore of aluminum is ______.
