(D) $Al$ displaces $H$ from $HCl$ but silver cannot; this means $Al$ is situated above $Ag$ in the $ECS$,hence $Al$ acts as the anode and $Ag$ acts as

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(D) $Al$ displaces $H$ from $HCl$ but silver cannot; this means $Al$ is situated above $Ag$ in the $ECS$,hence $Al$ acts as the anode and $Ag$ acts as the cathode.$E_{Cell}^0 = E_{Cathode}^0 - E_{Anode}^0$$E_{Cell}^0 = E_{Ag^{+}/Ag}^0 - E_{Al^{3+}/Al}^0$$2.46 \ V = 0.80 \ V - E_{Al^{3+}/Al}^0$$E_{Al^{3+}/Al}^0 = 0.80 \ V - 2.46 \ V = -1.66 \ V$.

Class 12 Chemistry Electrochemistry Electrode potential and ECell

Medium

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 $........... \ V$.

A
$+1.66$
B
$-3.26$
C
$3.26$
D
$-1.66$

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Electrochemistry

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Electrode potential and ECell

Standard electrode potential of three metals $X$,$Y$ and $Z$ are $-1.2 \, V$,$+0.5 \, V$ and $-3.0 \, V$ respectively. The reducing power of these metals will be

MediumAIPMT 2011

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Give the anode reaction for an electrode of any metal $M \,|\, M^{n+}$.

Easy

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Calculate the $emf$ of the cell $Cu_{(s)} | Cu^{2+}_{(aq)} || Ag^+_{(aq)} | Ag_{(s)}$. Given: $E^0_{Cu^{2+}/Cu} = +0.34 \ V$,$E^0_{Ag^+/Ag} = +0.80 \ V$.

MediumTS EAMCET 2007

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Consult the table of standard electrode potentials and suggest three substances that can oxidise ferrous ions under suitable conditions.

Medium

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Given the standard electrode potentials,$K^{+}/K = -2.93 \, V$,$Ag^{+}/Ag = 0.80 \, V$,$Hg^{2+}/Hg = 0.79 \, V$,$Mg^{2+}/Mg = -2.37 \, V$,and $Cr^{3+}/Cr = -0.74 \, V$,arrange these metals in their increasing order of reducing power.

Medium

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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 $........... \ V$.

Similar Questions

Standard electrode potential of three metals $X$,$Y$ and $Z$ are $-1.2 \, V$,$+0.5 \, V$ and $-3.0 \, V$ respectively. The reducing power of these metals will be

Give the anode reaction for an electrode of any metal $M \,|\, M^{n+}$.

Calculate the $emf$ of the cell $Cu_{(s)} | Cu^{2+}_{(aq)} || Ag^+_{(aq)} | Ag_{(s)}$. Given: $E^0_{Cu^{2+}/Cu} = +0.34 \ V$,$E^0_{Ag^+/Ag} = +0.80 \ V$.

Consult the table of standard electrode potentials and suggest three substances that can oxidise ferrous ions under suitable conditions.

Given the standard electrode potentials,$K^{+}/K = -2.93 \, V$,$Ag^{+}/Ag = 0.80 \, V$,$Hg^{2+}/Hg = 0.79 \, V$,$Mg^{2+}/Mg = -2.37 \, V$,and $Cr^{3+}/Cr = -0.74 \, V$,arrange these metals in their increasing order of reducing power.

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