Using the standard reduction potentials of th | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The standard reduction potentials are: $E^{\circ}_{Li^+/Li} = -3.05 \ V$,$E^{\circ}_{Mg^{2+}/Mg} = -2.36 \ V$,$E^{\circ}_{Zn^{2+}/Zn} = -0.76 \ V$

Vedclass · Accepted Answer

$Mg$ displaces $Zn$ from its solution.

Vedclass · Answer

(A) The standard reduction potentials are: $E^{\circ}_{Li^+/Li} = -3.05 \ V$,$E^{\circ}_{Mg^{2+}/Mg} = -2.36 \ V$,$E^{\circ}_{Zn^{2+}/Zn} = -0.76 \ V$,and $E^{\circ}_{Ni^{2+}/Ni} = -0.25 \ V$. $A$ metal with a more negative reduction potential acts as a stronger reducing agent and can displace a metal with a less negative (or more positive) reduction potential from its salt solution. Comparing the values: $E^{\circ}_{Mg^{2+}/Mg} (-2.36 \ V) Since $Mg$ has a lower reduction potential than $Zn$,$Mg$ can displace $Zn$ from its solution. Therefore,the statement '$Mg$ displaces $Zn$ from its solution' is correct.

Using the standard reduction potentials of the electrodes $Li$,$Zn$,$Mg$,and $Ni$ as $-3.05 \ V$,$-0.76 \ V$,$-2.36 \ V$,and $-0.25 \ V$ respectively,identify the correct statement.

Similar Questions

$I_2 + 2e^{-} \to 2I^{-}$; $E^{o} = 0.54 \ V$
$Cl_2 + 2e^{-} \to 2Cl^{-}$; $E^{o} = 1.36 \ V$
$Mn^{3+} + e^{-} \to Mn^{2+}$; $E^{o} = 1.50 \ V$
$Fe^{3+} + e^{-} \to Fe^{2+}$; $E^{o} = 0.77 \ V$
Which of the following is a correct statement?

What is the standard reduction potential $(E^o)$ for $Fe^{3+} \to Fe$ ? ............... $V$
Given that :
$Fe^{2+} + 2e^- \to Fe;$ $E^o_{Fe^{2+}/Fe} = -0.47 \ V$
$Fe^{3+} + e^- \to Fe^{2+};$ $E^o_{Fe^{3+}/Fe^{2+}} = +0.77 \ V$

$Zn^{2+} + 2e^- \to Zn_{(s)}$; $E^o = -0.76 \ V$
$Fe^{3+} + e^- \to Fe^{2+}$; $E^o = +0.77 \ V$
$Cr^{3+} + 3e^- \to Cr_{(s)}$; $E^o = -0.74 \ V$
$H^{+} + e^- \to 1/2 H_2$; $E^o = 0.00 \ V$
Which of the following is the strongest reducing agent?

What is to be done to determine the potential of any half cell?

Bubbles of gas $z$ are evolved from a solution containing $x$ and $y$. If the order of reduction potential is $x > y > z$,then:

Vedclass Test Series

Exam Paper Generator

Online Exam Module