(A) During electrolysis,the ion with the higher standard reduction potential $(E^{\circ})$ is reduced first at the cathode.Comparing the given values:

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(A) During electrolysis,the ion with the higher standard reduction potential $(E^{\circ})$ is reduced first at the cathode.Comparing the given values:$E^{\circ}_{A^{2+}/A} = 0.8 \ V$$E^{\circ}_{B^{3+}/B} = 0.6 \ V$Since $0.8 \ V > 0.6 \ V$,the ion $A^{2+}_{(aq.)}$ has a higher reduction potential.Therefore,$A^{2+}_{(aq.)}$ will be deposited first at the cathode.

Class 12 Chemistry Electrochemistry Electrochemical cells

Medium

$A^{2+}_{(aq.)} + 2e^- \to A_{(s)}$ ; $E^{\circ} = 0.8 \ V$
$B^{3+}_{(aq.)} + 3e^- \to B_{(s)}$ ; $E^{\circ} = 0.6 \ V$
Using the above information,find the ion which will be deposited first at the cathode if a solution containing $A^{2+}_{(aq.)}$ and $B^{3+}_{(aq.)}$ is electrolysed.

A
$A^{2+}_{(aq.)}$
B
$B^{3+}_{(aq.)}$
C
$H^{+}_{(aq.)}$
D
$OH^{-}_{(aq.)}$

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If $\Lambda _{NaCl}^{o}=126\,S\,cm^{2}mol^{-1}$,$\Lambda _{KBr}^{o}=152\,S\,cm^{2}mol^{-1}$,and $\Lambda _{KCl}^{o}=150\,S\,cm^{2}mol^{-1}$,then find $\Lambda ^{o}_{NaBr}$ in $S\,cm^{2}mol^{-1}$.

Easy

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Match List-$I$ with List-$II$:

List-$I$ (Applications) List-$II$ (Batteries/Cell)

$A$. Transistors $I$. Anode $- Zn/Hg$; Cathode $- HgO + C$

$B$. Hearing aids $II$. Hydrogen fuel cell

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Choose the correct answer from the options given below:

List-$I$ (Applications)	List-$II$ (Batteries/Cell)
$A$. Transistors	$I$. Anode $- Zn/Hg$; Cathode $- HgO + C$
$B$. Hearing aids	$II$. Hydrogen fuel cell
$C$. Inverters	$III$. Anode $- Zn$; Cathode $- Carbon$
$D$. Apollo space ship	$IV$. Anode $- Pb$; Cathode $- PbO_2$

MediumJEE MAIN 2025

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$A^{2+}_{(aq.)} + 2e^- \to A_{(s)}$ ; $E^{\circ} = 0.8 \ V$$B^{3+}_{(aq.)} + 3e^- \to B_{(s)}$ ; $E^{\circ} = 0.6 \ V$Using the above information,find the ion which will be deposited first at the cathode if a solution containing $A^{2+}_{(aq.)}$ and $B^{3+}_{(aq.)}$ is electrolysed.

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Which of the following changes occurs during the discharging of a lead accumulator?

Which of the following metals will precipitate copper from copper sulphate solution?

The cell reaction of the galvanic cell $Cu_{(s)} | Cu^{2+}_{(aq)} || Hg^{2+}_{(aq)} | Hg_{(l)}$ is

If $\Lambda _{NaCl}^{o}=126\,S\,cm^{2}mol^{-1}$,$\Lambda _{KBr}^{o}=152\,S\,cm^{2}mol^{-1}$,and $\Lambda _{KCl}^{o}=150\,S\,cm^{2}mol^{-1}$,then find $\Lambda ^{o}_{NaBr}$ in $S\,cm^{2}mol^{-1}$.

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$A^{2+}_{(aq.)} + 2e^- \to A_{(s)}$ ; $E^{\circ} = 0.8 \ V$
$B^{3+}_{(aq.)} + 3e^- \to B_{(s)}$ ; $E^{\circ} = 0.6 \ V$
Using the above information,find the ion which will be deposited first at the cathode if a solution containing $A^{2+}_{(aq.)}$ and $B^{3+}_{(aq.)}$ is electrolysed.