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  • Carbon cannot reduce the oxides of sodium, magnesium and aluminium to their respective metals. Why ? Where are these metals placed in the reactivity series ? How are these metals obtained from their ores ? Take an example to explain the process of extr

Carbon cannot reduce the oxides of sodium, magnesium and aluminium to their respective metals. Why ? Where are these metals placed in the reactivity series ? How are these metals obtained from their ores ? Take an example to explain the process of extraction along with chemical equations.

 

 

 

 
 
 
 
 

Answers (1)

•Carbon cannot reduce the oxides of sodium, magnesium and aluminium to their respective metals because These metals have more affinity for oxygen than carbon.

• These metals placed in the reactivity series Towards the top of the reactivity series .

• These metals are obtained by electrotytic reduction of their molten ores.

• Example : Extraction of sodium from molten sodium chloride by electrolysis.

Process :

• Molten NaCl is taken in an electrolytic cell and on passing electricity Na is deposited at cathode and chlorine is liberated at anode .

Reactions –

At cathode : Na+ + e- → Na

At anode : 2Cl- → Cl2 + 2e- ( or any other example)

 

Posted by

Safeer PP

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