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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
उत्तर
Components of electrolyte: Cryolite and fluorspar
Role played by each electrolyte is given below:
- Cryolite lowers the fusion temperature from 2050°C to 950°C and enhances conductivity
- Fluorspar and cryolite act as a solvent for the electrolytic mixture and increase conductivity.
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संबंधित प्रश्न
For the substance given below, describe the role played in the extraction of aluminium.
Cryolite
For the substance given below, describe the role played in the extraction of aluminium.
Graphite
Explain the following:
In construction work, why is the alloy of aluminium-duralumin used rather than pure aluminium?
How is ore purified (give equations also)
Write balanced equation for the following reaction:
Aluminium powder is warmed with hot and concentrated caustic soda solution.
Write the equation for the reaction that occurs at the cathode during the extraction by aluminium by electrolysis.
State the relevant reason for the following:
A layer of powered coke is used over the electrolytic mixture in Hall Heroult’s process.
State the relevant reason for the following:
Graphite anodes are continuously replaced during the electrolysis of alumina.
In Hall and Heroult's process, products liberated at anode and cathode are ______
What impurities are present in aluminium ore?
