1.

One faraday of electricity deposits one mol of Na from the molten salt but (1)/(3) mol of Al from an aluminium salt. Why?

Answer»

Solution :The reactions at cathode for the deposit of Na and AL are `Na^(+)+e^(-)toNa and Al^(3+)+3e^(-)toAl`
Thus, 1 FARADAY DEPOSITS 1 MOL of Na whereas 3 faradays are required for DEPOSITING one mol of Al.


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