Advertisements
Advertisements
प्रश्न
In the extraction of Al, impure Al2O3 is dissolved in conc. NaOH to form sodium aluminate and leaving impurities behind. What is the name of this process?
Advertisements
उत्तर
In the extraction of aluminium, impure Al2O3 is dissolved in concentrated NaOH to form NaAlO2. This method is known as leaching of alumina.
Al2O3(s) + 2 NaOH(aq) + 3 H2O(l) → 2 Na[Al(OH)4](aq)
APPEARS IN
संबंधित प्रश्न
Out of C and CO, which is a better reducing agent at the lower temperature range in the blast furnace to extract iron from the oxide ore?
What is the role of coke in the extraction of iron from its oxides?
Write the names and chemical formulae of any ‘two’ minerals of aluminium.
Explain the following methods to protect metals from corrosion:
Passivation
What is the role of the following compound-
SiO2 in the extraction of copper from copper pyrites?
Copper has the face centred cubic structure. The coordination number of each ion is:
The sulphide ore of iron is ____________.
The important ore of iron is:-
In the thermite process, the reducing agent is:
Calamine and Malachite, respectively, are the ores of ______.
