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Molten CuCl2, is electrolysed using plat...

Molten `CuCl_2`, is electrolysed using platinum electrode. The reaction occuring at anode is

A

`2Cl^(-) to Cl_2(g) + 2e^(-)`

B

`Cl_2(g) + 2e^(-) to 2Cl^(-)`

C

`Cu^(2+) + 2e^(-) to Cu(s)`

D

`Cu(s) to Cu^(2+) + 2e^(-)`

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The correct Answer is:
A
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Knowledge Check

  • Molten CuCl_(2) is electrolysed using platinum electrodes. The reaction occuring at anode is

    A
    `2Cl^(-) to Cl_(2) (g) + 2e^(-)`
    B
    `Cl_(2) (g) + 2e^(-) to 2Cl`
    C
    `Cu^(2+) + 2e^(-) to Cu (s)`
    D
    `Cu (s) to Cu^(2+) + 2e^(-)`

  • Brine is electrolysed by using inert electrodes. The reaction at anode is

    A
    `Cl_((aq))^(-) to 1/2 Cl_(2(g)) + e^(-) , E^@ = 1.36 V`
    B
    `2H_2O_((l)) to O_(2(g)) + 4H^(+) + 4e^(-) , E^(@) = 1.23 V`
    C
    `Na_((aq))^(+) + e^(-) to Na_((s)) , E^@ = 2.71 V`
    D
    `H_((aq))^(+) to 1/2 H_(2(g)) , E^(@) = 0.00V`

  • When an aqueous solution of CuCl_(2) is electrolysed using Pt inert electrodes, the reaction at cathode and anode respectively are

    A
    `4H_(2)O(l) overset(+4e)rarr2H_(2)(g) +4OH_(2)(aq), 2H_(2)O(l) overset(-4e^(-))rarrO_(2)(g)+4H^(+)(aq)`
    B
    `2Cu^(2+) (aq) overset(+4e^(-))rarr2Cu(s), 2H_(2)O(l) overset(-4e^(-))rarrO_(2)(g)+4H^(+)(aq)`
    C
    `Cu^(2+)(aq) overset(+2e^(-))rarrCu(s), 2Cl^(-) (aq) overset(-2e^(-))rarrCl_(2)(g)`
    D
    `2H_(2)O(l) overset(+2e^(-))rarrH_(2)(g)+2OH (aq), 2Cl^(-)(aq) overset(-2e^(-))rarrCl_(2)(g)`

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