Advertisements
Advertisements
प्रश्न
State the relevant reason for the following:
Graphite anodes are continuously replaced during the electrolysis of alumina.
उत्तर
The oxidation process takes place at the anode. In this process, oxygen is released which oxidises the anode made up of graphite to carbon monoxide which further oxidises to give carbon dioxide. Therefore, the anode is needed to be replaced from time to time.
APPEARS IN
संबंधित प्रश्न
Answer the following questions with respect to the electrolytic process in the extraction of aluminum:
Explain why powdered coke is sprinkled over the electrolytic mixture.
Name the constituents of Duralumin.
How is aluminium obtained from pure ore?
For the substance listed below, explain its role in the extraction of aluminium: Sodium hydroxide
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.
The following question relate to the extraction of aluminium by electrolysis.
Give the equation for the reaction that takes place at the cathode
During the concentration of bauxite ore, aluminium goes in ______ part because of its ______ nature.
Name the alloy used for the following purpose.
Making parts of watches
Name the compound formed when: Bauxite reacts with sodium hydroxide.
