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Standard Electrode Potential...

Standard Electrode Potential

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The standard EMF of the cell: Ni|Ni^(2+)||Cu^(2+)|Cu , is 0.59 volt. The standard electrode potential (reduction potential) of copper electrode is 0.34 volt. Calculate the standard electrode potential of nickel electrode.

The standard hydrogen electrode potential is zero, because

Knowledge Check

  • Assertion: A negative value of standard reduction potential means that reduction takes place on this electrode with reference to standard hydrogen electrode. Reason: The standard electrode potential of a half cell has a fixed value.

    A
    if both assertion and reason are true and the reason is the correct explanation of the assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
    C
    If assertion is true but reason is false
    D
    If assertion is false but reason is true.

  • Standard cell electrode potential is expressed as

    A
    `E_(cell)^(0)=E_(red(R.H.S.))^(0)-E_("Oxi"(L.H.S))^(0)`
    B
    `E_(cell)^(0)=E_(red(L.H.S.))^(0)+E_("Oxi"(R.H.S))^(0)`
    C
    `E_("cell")^(0)=E_("oxi(Anode)")^(0)+E_("Oxi(Cathode)")^(0)`
    D
    `E_(cell)^(0)=E_(red(R.H.S.))^(0)+E_("Oxi"(L.H.S))^(0)`

  • When measured against a standard calomel electrode, an electrode is found to have a standard reduction potential of 0.100 V. if standard reduction potential of calomel electrode is +0.244 V and it acts as anode, the standard electrode potential of the same electrode against standard hydrogen electrode will be

    A
    `-0.144V`
    B
    `+0.100V`
    C
    `-0.344V`
    D
    `-0.100V`

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    The standard hydrogen electrode potential is zero , because

    Which defines the standard reduction electrode potential of Zn^(2+) ions

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