(D) The formula for standard Gibbs energy is $\Delta G^{\circ} = -nFE^{\circ}_{\text{cell}}$.Here,$n = 2$ (number of electrons transferred),$F = 96500

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(D) The formula for standard Gibbs energy is $\Delta G^{\circ} = -nFE^{\circ}_{\text{cell}}$.Here,$n = 2$ (number of electrons transferred),$F = 96500 \ C \ mol^{-1}$ (Faraday constant),$E^{\circ}_{\text{cell}} = 1.1 \ V$.Substituting the values:$\Delta G^{\circ} = -2 \times 96500 \times 1.1 \ J \ mol^{-1}$.$\Delta G^{\circ} = -212300 \ J \ mol^{-1}$.Converting to $kJ \ mol^{-1}$:$\Delta G^{\circ} = -212.3 \ kJ \ mol^{-1}$.

Class 12 Chemistry Electrochemistry Electrode potential and ECell

Medium

The standard electrode potential for a $Daniell$ cell is $1.1 \ V$. Calculate the standard Gibbs energy for the reaction: $[Zn_{(s)} + Cu^{2+}_{(aq)} \rightarrow Zn^{2+}_{(aq)} + Cu_{(s)}]$

A
$-200.3 \ kJ \ mol^{-1}$
B
$-199.4 \ kJ \ mol^{-1}$
C
$-202.3 \ kJ \ mol^{-1}$
D
$-212.3 \ kJ \ mol^{-1}$

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Electrochemistry

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Electrode potential and ECell

$E^{\circ}_{Fe^{2+}/Fe} = -0.441 \ V$ and $E^{\circ}_{Fe^{3+}/Fe^{2+}} = 0.771 \ V$,the standard $EMF$ of the reaction $Fe + 2Fe^{3+} \rightarrow 3Fe^{2+}$ will be $.......... \ V$.

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If more than one species is available near the cathode,which species will undergo a reduction reaction? Provide suitable examples.

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Aluminium displaces hydrogen from dilute $HCl$ whereas silver does not. The e.m.f. of a cell prepared by combining $Al/Al^{3+}$ and $Ag/Ag^{+}$ is $2.46 \ V$. The reduction potential of silver electrode is $+0.80 \ V$. The reduction potential of aluminium electrode is $........... \ V$.

Medium

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The standard reduction potentials of three metals $A, B,$ and $C$ are $+0.5 \, V, -3.0 \, V,$ and $-1.2 \, V$ respectively. What is the order of their reducing power?

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Standard electrode potential values,$E^{\Theta}$ for $Al^{3+}/Al$ is $-1.66 \ V$ and that of $Tl^{3+}/Tl$ is $+1.26 \ V$. Predict the formation of $M^{3+}$ ion in solution and compare the electropositive character of the two metals.

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The standard electrode potential for a $Daniell$ cell is $1.1 \ V$. Calculate the standard Gibbs energy for the reaction: $[Zn_{(s)} + Cu^{2+}_{(aq)} \rightarrow Zn^{2+}_{(aq)} + Cu_{(s)}]$

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$E^{\circ}_{Fe^{2+}/Fe} = -0.441 \ V$ and $E^{\circ}_{Fe^{3+}/Fe^{2+}} = 0.771 \ V$,the standard $EMF$ of the reaction $Fe + 2Fe^{3+} \rightarrow 3Fe^{2+}$ will be $.......... \ V$.

If more than one species is available near the cathode,which species will undergo a reduction reaction? Provide suitable examples.

Aluminium displaces hydrogen from dilute $HCl$ whereas silver does not. The e.m.f. of a cell prepared by combining $Al/Al^{3+}$ and $Ag/Ag^{+}$ is $2.46 \ V$. The reduction potential of silver electrode is $+0.80 \ V$. The reduction potential of aluminium electrode is $........... \ V$.

The standard reduction potentials of three metals $A, B,$ and $C$ are $+0.5 \, V, -3.0 \, V,$ and $-1.2 \, V$ respectively. What is the order of their reducing power?

Standard electrode potential values,$E^{\Theta}$ for $Al^{3+}/Al$ is $-1.66 \ V$ and that of $Tl^{3+}/Tl$ is $+1.26 \ V$. Predict the formation of $M^{3+}$ ion in solution and compare the electropositive character of the two metals.

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