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What is the standard potential of the Tl...

What is the standard potential of the `Tl^(3+)//Tl` electrode ?
`Tl^(3+)+2e^(-) rarr Tl^(+)," "E^(@)=1.26" volt"`
`Tl^(+)+e^(-) rarr Tl," "E^(@)=-0.336" volt"`

Text Solution

Verified by Experts

`{:(Tl^(3+)+2e^(-) rarr Tl^(+), nFE^(@)=2xx1.26xxF=2.52 F),(Tl^(+)+e^(-) rarr Tl, nFE^(@)=1xx(-0.336)xxF=-0.336F),("Adding"),(bar(Tl^(3+)+3e^(-) rarr Tl, E^(@)=(2.52F-0.336F)/(nF)=2.184/3" ")):}`
`=0.728` volt
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The electrode potentials of two half reactions are as follows : {:(Fe^(3+)+e^(-) rarr Fe^(2+),,,E^(@)=+0.76" volt"),(Ce^(4+)+e^(-) rarr Ce^(3+),,,E^(@)=+1.60" volt"):} Giving reason, describe if Ce^(3+) can be oxidised by Fe^(3+) .

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The standard oxidation potentials, E^(@) , for the half reactions are as, Zn rarr Zn^(2+) + 2e^(-), " " E^(@) = + 0.76 volt Fe rarr Fe^(2+) + 2e^(-), " " E^(@) = +0.41 volt The emf of the cell, Fe^(2+) + Zn rarr Zn^(2+) + Fe is:

The standard potential E^(@) for the half reactions are as : Zn rarr Zn^(2+) + 2e^(-), E^(@) = 0.76V Cu rarr Cu^(2+) +2e^(-) , E^(@) = -0.34 V The standard cell voltage for the cell reaction is ? Zn +Cu^(2) rarr Zn ^(2+) +Cu

Given, standard electrode potentials, {:(Fe^(3+)+3e^(-) rarr Fe,,,E^(@) = -0.036 " volt"),(Fe^(2+)+2e^(-)rarr Fe,,,E^(@) = - 0.440 " volt"):} The standard electrode potential E^(@) for Fe^(3+) + e^(-) rarr Fe^(2+) is :

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Knowledge Check

  • The standard reduction for the following reactions are : Fe^(3+) + 3e^(-) rarr Fe with E^(@) = - 0.036 V Fe^(2+) + 2e^(-) rarr Fe with E^(@) = - 0.44 V What would be the standard electrode potential for the reaction Fe^(3+) + e^(-) rarr Fe^(2+) ?

    A
    0.772 V
    B
    0.077 V
    C
    `-0.404 V`
    D
    `0.772 V`

  • The standard oxidation potentials, E^(@) , for the half reactions are as, Zn rarr Zn^(2+) + 2e^(-), " " E^(@) = + 0.76 volt Fe rarr Fe^(2+) + 2e^(-), " " E^(@) = +0.41 volt The emf of the cell, Fe^(2+) + Zn rarr Zn^(2+) + Fe is:

    A
    `+ 0.35` volt
    B
    `-0.35` volt
    C
    `+1.17` volt
    D
    `-1.17` volt

  • The standard potential E^(@) for the half reactions are as : Zn rarr Zn^(2+) + 2e^(-), E^(@) = 0.76V Cu rarr Cu^(2+) +2e^(-) , E^(@) = -0.34 V The standard cell voltage for the cell reaction is ? Zn +Cu^(2) rarr Zn ^(2+) +Cu

    A
    0.42V
    B
    `-0.42 v `
    C
    `-1.1V`
    D
    1.10V