(B) metal with a lower standard reduction potential acts as a stronger reducing agent and can displace a metal with a higher standard reduction potent

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The standard reduction potential of iron is less than that of copper

(B) metal with a lower standard reduction potential acts as a stronger reducing agent and can displace a metal with a higher standard reduction potential from its salt solution. The standard reduction potential of $Fe^{2+}/Fe$ is $-0.44 \ V$,while that of $Cu^{2+}/Cu$ is $+0.34 \ V$. Since $E^{\circ}_{Fe^{2+}/Fe} < E^{\circ}_{Cu^{2+}/Cu}$,iron can displace copper from its salt solution according to the reaction: $Fe(s) + Cu^{2+}(aq) \rightarrow Fe^{2+}(aq) + Cu(s)$.

Class 12 Chemistry Electrochemistry Electrode potential and ECell

Easy

Iron displaces copper from its salt solution,because

A
Atomic number of iron is less than that of copper
B
The standard reduction potential of iron is less than that of copper
C
The standard reduction potential of iron is more than that of copper
D
The iron salt is more soluble in water than the copper salt

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Electrode potential and ECell

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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$A$ galvanic cell consists of a copper electrode and a standard hydrogen electrode. If $E^\circ (Cu^{2+}_{(aq)} | Cu_{(s)}) = +0.34 \text{ V}$, identify the reaction taking place at the positive electrode during the working of the cell.

MediumMHT CET 2026

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The $(\frac{\partial E}{\partial T})_P$ of different types of half cells are as follows:
$A$ $B$ $C$ $D$
$1 \times 10^{-4}$ $2 \times 10^{-4}$ $0.1 \times 10^{-4}$ $0.2 \times 10^{-4}$

(Where $E$ is the electromotive force)
Which of the above half cells would be preferred to be used as reference electrode?

$A$	$B$	$C$	$D$
$1 \times 10^{-4}$	$2 \times 10^{-4}$	$0.1 \times 10^{-4}$	$0.2 \times 10^{-4}$

DifficultJEE MAIN 2022

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The $emf$ of a galvanic cell constituted with the electrodes $Zn^{2+} | Zn$ $(-0.76 \ V)$ and $Fe^{2+} | Fe$ $(-0.41 \ V)$ is

DifficultKCET 2013

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If the standard reduction potentials for four divalent elements $X, Y, Z,$ and $W$ are $-1.46 \ V, -0.36 \ V, 0.15 \ V,$ and $-1.24 \ V$ respectively,then:

Medium

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Iron displaces copper from its salt solution,because

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

$A$ galvanic cell consists of a copper electrode and a standard hydrogen electrode. If $E^\circ (Cu^{2+}_{(aq)} | Cu_{(s)}) = +0.34 \text{ V}$, identify the reaction taking place at the positive electrode during the working of the cell.

The $(\frac{\partial E}{\partial T})_P$ of different types of half cells are as follows:$A$$B$$C$$D$$1 \times 10^{-4}$$2 \times 10^{-4}$$0.1 \times 10^{-4}$$0.2 \times 10^{-4}$(Where $E$ is the electromotive force)Which of the above half cells would be preferred to be used as reference electrode?

The $emf$ of a galvanic cell constituted with the electrodes $Zn^{2+} | Zn$ $(-0.76 \ V)$ and $Fe^{2+} | Fe$ $(-0.41 \ V)$ is

If the standard reduction potentials for four divalent elements $X, Y, Z,$ and $W$ are $-1.46 \ V, -0.36 \ V, 0.15 \ V,$ and $-1.24 \ V$ respectively,then:

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