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How would you determine the standard electrode potential of the systemMg²⁺ | Mg?

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Solution

The standard electrode potential of Mg²⁺ | Mg can be measured with respect to the standard hydrogen electrode, represented by Pt₍_s₎, H₂₍_g₎ (1 atm) | H⁺₍_aq₎(1 M).

A cell, consisting of Mg | MgSO₄ (aq 1 M) as the anode and the standard hydrogen electrode as the cathode, is set up.

Then, the emf of the cell is measured and this measured emf is the standard electrode potential of the magnesium electrode.

Here, for the standard hydrogen electrode is zero.

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Similar questions

Assertion: The absolute value of standard electrode potential can be determined experimentally.

Reason: Standard electrode potentials are measured using a hydrogen half-cell reference electrode whose potential is known.

Q. Assertion :The absolute value of the electrode potential cannot be determined experimentally Reason: The electrode potentials are generally determined with respect to standard hydrogen electrodes.

N i | N i^{2 +} | | C u^{2 +} | C u

The standard EMF of the above cell is 0.59 V. The standard electrode potential (reduction potential) of the copper electrode is 0.34 V. Calculate the standard electrode potential of nickel electrode.

Q. Electrode potential for Mg electrode varies according to the equation

E_{M} g^{2} + | M g

E_{M} g^{2} + | M g^{Θ}

\frac{0.059}{2} l o g \frac{1}{[M g^{2 +}]}

E_{M g^{2 +} | M g}

l o g [M g^{2 +}]

State True or False.

The absolute value of standard single electrode potential can be determined experimentally.

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