1.

Explain the extraction of metals towards the top of the activity series.

Answer»

Solution :The metals like sodium, potassium, magnesium, CALCIUM etc. are placed high up in the reactivity series cannot be reduced by heating with carbon. These metals have more affinity for oxygen so these can be obtained by electrolysis of their molten chlorides. The metals GET deposited on the cathode and the chlorine is liberated at the anode.
At Cathode : `NA^(+)+e^(-)toNa`
At anode : `2Cl^(-)toCl_(2)+2e^(-)`
Aluminium can be obtained by the electrolysis of aluminium OXIDE.


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