The standard reduction potential E^{circ} for | vedclass

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(B) The given reactions are oxidation half-reactions, so the given $E^{\circ}$ values are oxidation potentials $(E^{\circ}_{op})$:$Zn \rightarrow Zn^{

Vedclass · Accepted Answer

$0.35 \ V$

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(B) The given reactions are oxidation half-reactions, so the given $E^{\circ}$ values are oxidation potentials $(E^{\circ}_{op})$:$Zn ightarrow Zn^{2+} + 2e^-, E^{\circ}_{op} = +0.76 \ V$$Fe ightarrow Fe^{2+} + 2e^-, E^{\circ}_{op} = +0.41 \ V$For the cell reaction $Fe^{2+} + Zn ightarrow Zn^{2+} + Fe$, $Zn$ is oxidized (anode) and $Fe^{2+}$ is reduced (cathode).The cell potential is given by: $E^{\circ}_{cell} = E^{\circ}_{op}(	ext{anode}) + E^{\circ}_{rp}(	ext{cathode})$Since $E^{\circ}_{rp}(	ext{cathode}) = -E^{\circ}_{op}(	ext{cathode})$, we have:$E^{\circ}_{cell} = E^{\circ}_{op}(Zn) - E^{\circ}_{op}(Fe)$$E^{\circ}_{cell} = 0.76 \ V - 0.41 \ V = +0.35 \ V$.

$Zn \rightarrow Zn^{2+} + 2e^-$	$E^{\circ} = +0.76 \ V$
$Fe \rightarrow Fe^{2+} + 2e^-$	$E^{\circ} = +0.41 \ V$

The standard reduction potential $E^{\circ}$ for half reactions are
$Zn \rightarrow Zn^{2+} + 2e^-$ $E^{\circ} = +0.76 \ V$
$Fe \rightarrow Fe^{2+} + 2e^-$ $E^{\circ} = +0.41 \ V$

The $EMF$ of the cell reaction $Fe^{2+} + Zn \rightarrow Zn^{2+} + Fe$ is

Similar Questions

Fill in the blanks :
$1$. ...... metal is the strongest reducing agent in aqueous solution.
$2$. ...... gas is the strongest oxidizing agent.
$3$. The standard reduction potential of any electrode is measured with reference to ......

Consider the half-cell reduction reactions:
$Mn^{2+} + 2e^{-} \rightarrow Mn$,$E^{\circ} = -1.18 \ V$
$Mn^{3+} + e^{-} \rightarrow Mn^{2+}$,$E^{\circ} = +1.51 \ V$
The $E^{\circ}$ for the reaction $3Mn^{2+} \rightarrow Mn + 2Mn^{3+}$,and the possibility of the forward reaction are respectively:

If the cell potential value is negative for a cell constructed by attaching a standard hydrogen electrode to another half-cell,then the other half-cell will be:
$(i)$ Anode or cathode?
$(ii)$ Positive or negative?
$(iii)$ On left side or right side?

The electrode potentials for $Cu^{2+}_{(aq)} + e^- \rightarrow Cu^{+}_{(aq)}$ and $Cu^{+}_{(aq)} + e^- \rightarrow Cu_{(s)}$ are $+0.15 \ V$ and $+0.50 \ V$ respectively. The value of $E^o_{Cu^{2+}/Cu}$ will be $........ \ V$.

For the spontaneity of a cell,which of the following is correct?

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The standard reduction potential $E^{\circ}$ for half reactions are$Zn \rightarrow Zn^{2+} + 2e^-$$E^{\circ} = +0.76 \ V$$Fe \rightarrow Fe^{2+} + 2e^-$$E^{\circ} = +0.41 \ V$The $EMF$ of the cell reaction $Fe^{2+} + Zn \rightarrow Zn^{2+} + Fe$ is