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How would you determine the standard red...

How would you determine the standard reduction potential of the system `Mg^(2+)|Mg`?

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The standard electrode potential of `Mg^(2+)|Mg` system can be measured by connecting the Mg electrode immersed in 1M `Mg^(2+)` solution with S.H.E. This may be represented as :
`Mg|Mg^(2+) (1M) ||H^(+) ( 1M) |H_2` 1 atm , Pt
From measured potential `E_((Mg^(2+) |Mg))^(Theta)` can be calculated
`E_(cell)^(@) = E_((H^(+)|H_(2))^(Theta) - E_((Mg^(2+)|Mg))^(Theta)`
`therefore E_((Mg^(2+)|Mg))^(Theta) = 0 - E_(cell)^(@)`
This is similar to the method discussed for `Zn^(2+)|Zn` system .
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Knowledge Check

  • Standard reduction potential is calculated at

    A
    `27^(@)C`
    B
    `25^(@)C`
    C
    `0^(@)C`
    D
    `100^(@)C`

  • Standard reduction potential of an element equal to

    A
    `+ 1 xx` its reduction potential
    B
    `- 1 xx ` its standard oxidation potential
    C
    `0.00`V
    D
    `+ 1 xx ` its standard oxidation potential

  • The first ionization potential of Mg is

    A
    less than Al
    B
    more than Al
    C
    equal to Al
    D
    can be less or more than Al