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What products do we get at cathode and a...

What products do we get at cathode and anode during the electrolysis of molten and aqueous NaCl ?

Text Solution

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Moten NaCl
(i) Na is deposited at cathode.
`Cl_(2)` is evolved at anode.
Aqueous NaCl
(ii) `H_(2)` is evolved at cathode.
(iii) `Cl_(2)` is evolved at anode.
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Knowledge Check

  • At anode in the electrolysis of fused NaCl:

    A
    `Na^(+)` is oxidised
    B
    `Cl^(-)` is oxidised
    C
    `Cl^(-)` is reduced
    D
    `Na^(+)` is reduced

  • The products obtained at the cathode and anode respectively during the electrolysis of aqueous K_(2) SO_(4) solution using platinum electrodes are

    A
    `O_(2),H_(2)`
    B
    `H_(2)O_(2)`
    C
    `H_(2),SO_(2)`
    D
    `K,SO_(2)`

  • The products obtained at the cathode and anode respectively during the electrolysis of aqueous K_(2)SO_(4) solution using platinum electrodes are :

    A
    `O_(2), H_(2)`
    B
    `H_(2), O_(2)`
    C
    `H_(2), SO_(2)`
    D
    `K, SO_(2)`

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