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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?
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)
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संबंधित प्रश्न
Draw neat and labelled diagram of Bessermer converter used in the extraction of copper.
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Galvanization
Explain the following methods to protect metals from corrosion:
Passivation
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