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Calculate the potential corresponding to...

Calculate the potential corresponding to the following cell. Given
`Pt|Co^(2+)(2.0M),Co^(3+)(0.01M)||Cr^(3+)(0.5M),Cr_(2)O_(7)^(2-)(4.0M),H^(o+)(1.5M)|Pt `
`E^(c-)._(Co^(2+)|Co^(3+))=-1.82V`
`E^(c-)._(Cr_(2)O_(7)^(2-)|Cr^(3+))=+1.33V`

Text Solution

Verified by Experts

The correct Answer is:
0.32V
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Calculate the potential of the following cell : Pt(s)|{:(Ce^(3+),(2M)) ,(Ce^(4+),(1M)):}||{:(Cr^(3+)(2M),) ,(Cr_(2)O_(7)^(2-)(1M),H^(o+)(1M)):}|Pt(s) Given :E^(c-)._(Ce^(3+)|Ce^(4+))=-1.7,E^(c-)._(Cr_(2)O_(7)^(2-)|Cr^(3+))=1.3V ( Take 0.059~~0.06)

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Knowledge Check

  • Calculate the potential corresponding to the following cell Pt|Co^(2+)(2.0 M),Co^(3+)(0.01 M||Cr^(3+)(0.5M) Cr_(2)O_(7)^(2)(4.0 M),H^(+)(1.5 M)|Pt Given E_(Co^(2+)//Co^(3+))^(2)=-1.82 V, E_(Cr_(2)O_(7)^(2)-//Cr^(3))^(2)=+1.33 V

    A
    `-0.32 v`
    B
    `+0.32 V`
    C
    `-0.44 v`
    D
    `+0.44 V`

  • Calculate the potential of the following cell : Pt|underset((2.0M)(1.0M))(Co^(2+),Co^(3+))|underset((1.0M)(4.0M)(1.0M))(Cr^(3+),Cr_(2)O_(7)^(2_-),H^(o+))|Pt E^(c-)._(Co^(2+)|Co^(3+))=-2V,E^(c-)._(Cr_(2)O_(7)^(2-)|Cr^(3+))=+1.0V

    A
    `1.024V`
    B
    `-1.024V`
    C
    `0.976V`
    D
    `-0.976V`

  • [Co(Cr_(2)O_(4))_(3)]^(3-) is a

    A
    Low spin complex
    B
    Paramagnetic
    C
    High spin
    D
    `sp^(3)d^(2)` hybridized

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    Cr_(2)O_(7)^(2-)+I^(-)toI_(2)+Cr^(3+) E_(cell)^(@)=0.79V,E_(Cr_(2)O_(7)^(2-))^(@)=1.33V,E_(I_(2))^(o) is

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