MetallurgyHard
Question
Which of the following metals cannot be extracted by the carbon reduction process ?
Options
A.Zn
B.Fe
C.Al
D.Sn
Solution
Aluminium is extracted by electrolytic reduction of mixture of molten Al2O3 + Na3AlF6 + CaF2.
Due to very high energy of dissociation of Al2O3, the reduction at such high temperature will give carbide in place of metallic Al according to the following reaction. 2Al2O3 + 6C
Al4C3 + 3CO2.
Due to very high energy of dissociation of Al2O3, the reduction at such high temperature will give carbide in place of metallic Al according to the following reaction. 2Al2O3 + 6C
Al4C3 + 3CO2.Create a free account to view solution
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