(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

The $E^{0}_{Red}$ values for $P, Q, R$ and $S$ are $-2.90 \, V, +0.34 \, V, +1.20 \, V$ and $-0.76 \, V$ respectively. The decreasing order of their reactivity is:

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Give the cell potential formula for the Daniell cell and the Copper-Silver cell.

Easy

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The $E^{0}_{Red}$ values for elements $I, II, III,$ and $IV$ are $-3.04 \, V, -1.90 \, V, 0.00 \, V,$ and $1.90 \, V$ respectively. Which element has the maximum reducing power?

Medium

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For the cell $Zn_{(s)} | Zn^{2+}_{(aq)} || M^{x+}_{(aq)} | M_{(s)}$,different half cells and their standard electrode potentials are given below:
$M^{x+}_{(aq)} / M_{(s)}$ $Au^{3+}_{(aq)} / Au_{(s)}$ $Ag^{+}_{(aq)} / Ag_{(s)}$ $Fe^{3+}_{(aq)} / Fe^{2+}_{(aq)}$ $Fe^{2+}_{(aq)} / Fe_{(s)}$
$E^o M^{x+} / M (V)$ $1.40$ $0.80$ $0.77$ $-0.44$

If $E^o Zn^{2+}/Zn = -0.76 \ V$,which cathode will give a maximum value of $E^o_{cell}$ per electron transferred?

DifficultJEE MAIN 2019

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If the reduction potential is more,then

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$M^{x+}_{(aq)} / M_{(s)}$	$Au^{3+}_{(aq)} / Au_{(s)}$	$Ag^{+}_{(aq)} / Ag_{(s)}$	$Fe^{3+}_{(aq)} / Fe^{2+}_{(aq)}$	$Fe^{2+}_{(aq)} / Fe_{(s)}$
$E^o M^{x+} / M (V)$	$1.40$	$0.80$	$0.77$	$-0.44$

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

The $E^{0}_{Red}$ values for $P, Q, R$ and $S$ are $-2.90 \, V, +0.34 \, V, +1.20 \, V$ and $-0.76 \, V$ respectively. The decreasing order of their reactivity is:

Give the cell potential formula for the Daniell cell and the Copper-Silver cell.

The $E^{0}_{Red}$ values for elements $I, II, III,$ and $IV$ are $-3.04 \, V, -1.90 \, V, 0.00 \, V,$ and $1.90 \, V$ respectively. Which element has the maximum reducing power?

If the reduction potential is more,then

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