(A) The cell reaction is: $2Fe^{3+} + 2I^- \to 2Fe^{2+} + I_2$.This reaction consists of two half-reactions:Cathode (Reduction): $2Fe^{3+} + 2e^- \to

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(A) The cell reaction is: $2Fe^{3+} + 2I^- \to 2Fe^{2+} + I_2$.This reaction consists of two half-reactions:Cathode (Reduction): $2Fe^{3+} + 2e^- \to 2Fe^{2+}$; $E^o_{\text{cathode}} = 0.771 \, V$.Anode (Oxidation): $2I^- \to I_2 + 2e^-$; $E^o_{\text{anode}} = 0.536 \, V$.$E^o_{\text{cell}} = E^o_{\text{cathode}} - E^o_{\text{anode}}$.$E^o_{\text{cell}} = 0.771 \, V - 0.536 \, V = 0.235 \, V$.

Class 12 Chemistry Electrochemistry Electrode potential and ECell

Medium

Given electrode potentials:
$Fe^{3+} + e^- \to Fe^{2+}$; $E^o = 0.771 \, V$
$I_2 + 2e^- \to 2I^-$; $E^o = 0.536 \, V$
$E^o_{\text{cell}}$ for the cell reaction
$2Fe^{3+} + 2I^- \to 2Fe^{2+} + I_2$ is:

A
$0.771 - 0.536 = 0.235 \, V$
B
$0.536 - 0.771 = -0.235 \, V$
C
$2 \times 0.771 - 0.536 = 1.006 \, V$
D
$0.771 + 0.536 = 1.307 \, V$

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Electrode potential and ECell

If standard reduction potentials $(E^0)$ of $(Al^{+3}(aq)|Al(s))$, $(Fe^{+2}(aq)|Fe(s))$, $(Cu^{+2}(aq)|Cu(s))$ and $(Ag^{+1}(aq)|Ag(s))$ are $-1.66 \text{ V}$, $-0.44 \text{ V}$, $+0.34 \text{ V}$ and $+0.79 \text{ V}$ respectively, which of the following reactions is non-spontaneous?

DifficultMHT CET 2026

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The standard electrode potentials for some half-reactions are given below. Which statement is correct?
$(A) Sn^{4+} + 2e^{-} \rightarrow Sn^{2+}, E^o = +0.15 \ V$
$(B) 2Hg^{2+} + 2e^{-} \rightarrow Hg_{2}^{2+}, E^o = +0.92 \ V$
$(C) PbO_2 + 4H^{+} + 2e^{-} \rightarrow Pb^{2+} + 2H_2O, E^o = +1.45 \ V$

Easy

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The standard electrode potentials $\left( E_{M^{+}/M}^\circ \right)$ of four metals $A, B, C$ and $D$ are $-1.2 \ V, 0.6 \ V, 0.85 \ V$ and $-0.76 \ V$,respectively. The sequence of deposition of metals on applying potential is

DifficultJEE MAIN 2014

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According to standard electrode potential,which is the strongest reducing agent and oxidising agent?
$Al (-1.66 \ V), Cu (+0.34 \ V), Li (-3.05 \ V), Ag (+0.80 \ V)$

Easy

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Zinc can be coated on iron to produce galvanized iron,but the reverse is not possible. This is because:

MediumNEET 2016

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Given electrode potentials:$Fe^{3+} + e^- \to Fe^{2+}$; $E^o = 0.771 \, V$$I_2 + 2e^- \to 2I^-$; $E^o = 0.536 \, V$$E^o_{\text{cell}}$ for the cell reaction$2Fe^{3+} + 2I^- \to 2Fe^{2+} + I_2$ is:

Similar Questions

If standard reduction potentials $(E^0)$ of $(Al^{+3}(aq)|Al(s))$, $(Fe^{+2}(aq)|Fe(s))$, $(Cu^{+2}(aq)|Cu(s))$ and $(Ag^{+1}(aq)|Ag(s))$ are $-1.66 \text{ V}$, $-0.44 \text{ V}$, $+0.34 \text{ V}$ and $+0.79 \text{ V}$ respectively, which of the following reactions is non-spontaneous?

The standard electrode potentials for some half-reactions are given below. Which statement is correct?$(A) Sn^{4+} + 2e^{-} \rightarrow Sn^{2+}, E^o = +0.15 \ V$$(B) 2Hg^{2+} + 2e^{-} \rightarrow Hg_{2}^{2+}, E^o = +0.92 \ V$$(C) PbO_2 + 4H^{+} + 2e^{-} \rightarrow Pb^{2+} + 2H_2O, E^o = +1.45 \ V$

The standard electrode potentials $\left( E_{M^{+}/M}^\circ \right)$ of four metals $A, B, C$ and $D$ are $-1.2 \ V, 0.6 \ V, 0.85 \ V$ and $-0.76 \ V$,respectively. The sequence of deposition of metals on applying potential is

According to standard electrode potential,which is the strongest reducing agent and oxidising agent?$Al (-1.66 \ V), Cu (+0.34 \ V), Li (-3.05 \ V), Ag (+0.80 \ V)$

Zinc can be coated on iron to produce galvanized iron,but the reverse is not possible. This is because:

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Given electrode potentials:
$Fe^{3+} + e^- \to Fe^{2+}$; $E^o = 0.771 \, V$
$I_2 + 2e^- \to 2I^-$; $E^o = 0.536 \, V$
$E^o_{\text{cell}}$ for the cell reaction
$2Fe^{3+} + 2I^- \to 2Fe^{2+} + I_2$ is:

According to standard electrode potential,which is the strongest reducing agent and oxidising agent?
$Al (-1.66 \ V), Cu (+0.34 \ V), Li (-3.05 \ V), Ag (+0.80 \ V)$