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प्रश्न
Write the equation for the reaction where the aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide.
उत्तर
\[\ce{2Al(OH)3 ->[Heat][1000^\circ C] Al2O3 + 3H2O}\]
APPEARS IN
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
Name the solution used to react with Bauxite as a first step in obtaining pure aluminum oxide, in the Baeyer’s process
Aluminium is said to be more reactive than iron, towards oxygen (or air) yet iron undergoes corrosion to a greater extent than aluminum. Explain.
Give the chemical names and formulae of the main ores of zinc.
Name the ore from which aluminium is extracted.
How is aluminium obtained from pure ore?
A to F below relate to the source and extraction of either zinc or aluminium.
- Bauxite
- Coke
- Cryolite
- Froth floatation
- Sodium hydroxide solution
- Zinc blende
Fill in the blanks using the most appropriate words from A to F:
(i) The ore from which aluminium is extracted must be treated with ______ so that pure aluminium oxide can be obtained.
(ii) Pure aluminium oxide is dissolved in ______ to make a conducting solution.
Answer the following question :
Name a metal which is found abundantly in earth's crust.
Name the compound added to pure alumina to lower the fusion temperature during the electrolytic reduction of alumina.
Explain with reason:
A neutral gas other than oxygen is formed at the anode during the electrolysis of fused alumina.
