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One faraday of electricity deposits one ...

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

Text Solution

Verified by Experts

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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Knowledge Check

  • One faraday of electricity will liberate one mole of metal from a molten of-

    A
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    B
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    C
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    D
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    A
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    B
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    C
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    D
    `NaCl`

  • The amount of electricity required to deposit one gram atom of Mg from its molten salt is

    A
    96500 C
    B
    `1.93 xx 10^(5)`C
    C
    1 C
    D
    4825 C

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