(C) The standard reduction potential of $Mg^{2+}/Mg$ is $-2.37\,V$ and that of $Zn^{2+}/Zn$ is $-0.762\,V$.$A$ metal with a more negative reduction po

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(C) The standard reduction potential of $Mg^{2+}/Mg$ is $-2.37\,V$ and that of $Zn^{2+}/Zn$ is $-0.762\,V$.$A$ metal with a more negative reduction potential is a stronger reducing agent and can displace a metal with a less negative (or more positive) reduction potential from its salt solution.Since $E^o_{Mg^{2+}/Mg} Therefore,$Zn$ cannot reduce $Mg^{2+}$ to $Mg$. Consequently,no reaction occurs when zinc dust is added to a solution of $MgCl_2$.

Class 12 Chemistry Electrochemistry Electrode potential and ECell

Difficult

The standard electrode potentials at $25\,^oC$ for the following half-reactions are given:
$Zn^{2+} + 2e^- \to Zn, E^o = -0.762\,V$
$Mg^{2+} + 2e^- \to Mg, E^o = -2.37\,V$
When zinc dust is added to a solution of $MgCl_2$,what happens?

A
$ZnCl_2$ is formed
B
Zinc dissolves in the solution
C
No reaction takes place
D
$Mg$ is precipitated

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Electrochemistry

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Electrode potential and ECell

$E^o$ values of $Mg^{2+}/Mg$,$Zn^{2+}/Zn$ and $Fe^{2+}/Fe$ are $-2.37 \ V$,$-0.76 \ V$ and $-0.44 \ V$ respectively. Which of the following statements is correct?

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Given that the standard potentials $(E^{\circ})$ of $Cu^{2+}/Cu$ and $Cu^{+}/Cu$ are $0.34 \ V$ and $0.522 \ V$ respectively,the $E^{\circ}$ of $Cu^{2+}/Cu^{+}$ is (in $V$)

DifficultJEE MAIN 2020

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These are physical properties of an element:
$(A)$ Sublimation enthalpy
$(B)$ Ionisation enthalpy
$(C)$ Hydration enthalpy
$(D)$ Electron gain enthalpy
The total number of the above properties that affect the reduction potential is $......$ .

EasyJEE MAIN 2021

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What is electrode potential?

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$E^o_{cell}$ for the cell: $Pt_{(s)} | H_{2(g)} | HCOOH_{(aq)} || CH_3COOH_{(aq)} | H_{2(g)} | Pt_{(s)}$ at $25^oC$ is ............ $V$. ($K_a$ of $HCOOH = 2.4 \times 10^{-4}$,$K_a$ of $CH_3COOH = 1.8 \times 10^{-5}$,$\log 2 = 0.3$,$\log 3 = 0.477$,$\frac{2.303RT}{F} = 0.059$ or $0.06$)

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The standard electrode potentials at $25\,^oC$ for the following half-reactions are given:$Zn^{2+} + 2e^- \to Zn, E^o = -0.762\,V$$Mg^{2+} + 2e^- \to Mg, E^o = -2.37\,V$When zinc dust is added to a solution of $MgCl_2$,what happens?

Similar Questions

$E^o$ values of $Mg^{2+}/Mg$,$Zn^{2+}/Zn$ and $Fe^{2+}/Fe$ are $-2.37 \ V$,$-0.76 \ V$ and $-0.44 \ V$ respectively. Which of the following statements is correct?

Given that the standard potentials $(E^{\circ})$ of $Cu^{2+}/Cu$ and $Cu^{+}/Cu$ are $0.34 \ V$ and $0.522 \ V$ respectively,the $E^{\circ}$ of $Cu^{2+}/Cu^{+}$ is (in $V$)

These are physical properties of an element:$(A)$ Sublimation enthalpy$(B)$ Ionisation enthalpy$(C)$ Hydration enthalpy$(D)$ Electron gain enthalpyThe total number of the above properties that affect the reduction potential is $......$ .

What is electrode potential?

$E^o_{cell}$ for the cell: $Pt_{(s)} | H_{2(g)} | HCOOH_{(aq)} || CH_3COOH_{(aq)} | H_{2(g)} | Pt_{(s)}$ at $25^oC$ is ............ $V$. ($K_a$ of $HCOOH = 2.4 \times 10^{-4}$,$K_a$ of $CH_3COOH = 1.8 \times 10^{-5}$,$\log 2 = 0.3$,$\log 3 = 0.477$,$\frac{2.303RT}{F} = 0.059$ or $0.06$)

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The standard electrode potentials at $25\,^oC$ for the following half-reactions are given:
$Zn^{2+} + 2e^- \to Zn, E^o = -0.762\,V$
$Mg^{2+} + 2e^- \to Mg, E^o = -2.37\,V$
When zinc dust is added to a solution of $MgCl_2$,what happens?

These are physical properties of an element:
$(A)$ Sublimation enthalpy
$(B)$ Ionisation enthalpy
$(C)$ Hydration enthalpy
$(D)$ Electron gain enthalpy
The total number of the above properties that affect the reduction potential is $......$ .