suggest different chemical processes used for obtaining a metal
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u will find it in ncert science textbook ch metals and non metals pg no.51, 52
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1. For obtaining metals that are in the middle of the reactivity series, oxides of such metals can be reduced with coke (carbon) which acts as a reducing agent.
Example:
2 Fe2O3 + 3 C ----> 4 Fe + 3 CO2
2. For obtaining metals that are high in the reactivity series, their oxides are reduced to metals by the process of electrolysis.
Example: Electrolysis of sodium chloride
At cathode: Na+ + e- -----> Na
At anode: 2 Cl- ----> Cl2 + 2e-
Example:
2 Fe2O3 + 3 C ----> 4 Fe + 3 CO2
2. For obtaining metals that are high in the reactivity series, their oxides are reduced to metals by the process of electrolysis.
Example: Electrolysis of sodium chloride
At cathode: Na+ + e- -----> Na
At anode: 2 Cl- ----> Cl2 + 2e-
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