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E(1) and E(2) are two half-cells of el...

`E_(1) and E_(2)` are two half-cells of electrode potential which when combined form a cell of electrode `E_(3),` then which of the following is true (where `n_(1) , n_(2)` and nu are number of electrons exchanged in first, second and combined half cells)?

A

`E _(3) = E _(2) - E _(1)`

B

`E _(1) = ( E _(1) n _(1) + E _(2) n _(2))/( n_(3))`

C

`E _(3) = ( E _(1) n _(1) - E _(2) n _(2))/( n _(3) ^(2))`

D

`E _(3) = E _(1) + E _(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Electrode potential is intensive property while gibb.s free energy is entensive.
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Knowledge Check

  • when two half-cells of electrode potential of E_1 and E_2 are combined to form a half cell of electrode potential E_3 , then (when n_1,n_2"and"n_3 are no. of electrons exchanged in first second and combined half-cells:

    A
    `E_3=E_2-E_1`
    B
    `E_3=(E_1n_1+E_2n_2)/(n_3)`
    C
    `E_3=(E_1n_1+E_2n_2)/(n_3^2)`
    D
    `E_3=E_1-E_2`

  • For the half cell At pH=2 , the electrode potential is

    A
    `1.36V`
    B
    `1.30V`
    C
    `1.42V`
    D
    `1.20V`

  • For the half cell At pH=2 . Electrod potential is :

    A
    `1.36V`
    B
    `1.30 V`
    C
    `1.42 V`
    D
    `1.20 V`

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