Advertisements
Advertisements
Question
Write the equation for the reaction that occurs at the cathode during the extraction by aluminium by electrolysis.
Solution
\[\ce{Al^{3+} + 3e^- -> Al}\]
APPEARS IN
RELATED QUESTIONS
Write the equation for the reaction where the aluminum oxide for the electrolytic extraction of aluminum is obtained by heating aluminum hydroxide.
Name the constituents of Duralumin.
Name the constituents of Brass.
What is the role of cryolite (NaAlF6) in the electrolytic reduction of alumina in the Hall's process?
Why is food containing iron salts should not be cooked in aluminium utensils?
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.
Aluminium is extracted from its chief ore bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Mention one reason for the use of aluminium in thermite welding. Which particular property of cast iron makes it unsuitable for the construction of bridges?
Explain why :
Iron sheets are coated with zinc during galvanization.
Name the following:
A metal which is always present in the amalgam.
Name the alloy used for the following purpose.
Aircraft
