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प्रश्न
Give the chemical name and formula of 'cryolite'
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उत्तर
Cryolite is Na3AlF6 and its chemical name is Sodium aluminium fluoride.
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संबंधित प्रश्न
Name the compound added to pure alumina to lower the fusion temperature during the electrolytic reduction of alumina.
Give appropriate scientific reasons for Zinc oxide can be reduced to zinc metal by using
carbon, but aluminium oxide cannot be reduced by a reducing agent
Give reason for the following:
Carbon anodes are used in the electrolytic extraction of aluminium.
Give equation for the following conversion: Ferric oxide to iron.
For the reaction of a metal oxide. Suggest a reducing agent other than carbon
what is the function of cryolite in the extraction of aluminium, other than acting as a solvent for bauxite?
What is the type of bonding expected in a metallic chloride?
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.
(a) When bauxite is treated with sodium hydroxide solution, what happens to:
(i) the aluminium oxide?
(ii) The iron (III) oxide?
Name the following :
A metal oxide that can be reduced by hydrogen
Give the equations for the reduction of copper oxide.
