1. Tardigrade
  2. Question
  3. Chemistry
  4. Arrange the following metals in which they displace each other from the solutions of their salts in decreasing order. Al, Cu, Fe, Mg and Zn. [E° AI3+/AI = -1-66 V, E° Cu2+/Cu = +0.34 V E°Fe2+/Fe= - 0.44 V, E°Mg2+/Mg = -2.36 V and E° Zn2+/Zn = -0.76 V]

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Q. Arrange the following metals in which they displace each other from the solutions of their salts in decreasing order. $Al$, $Cu$, $Fe$, $Mg$ and $Zn$.
$[E^{\circ} _{AI^{3+}/AI} = -1-66 \,V$, $E^{\circ} Cu^{2+}/Cu = +0.34\, V$
$E^{\circ}_{Fe^{2+}/Fe}= - 0.44\, V$, $E^{\circ}_{Mg^{2+}/Mg} = -2.36 \,V$ and
$E^{\circ} _{Zn^{2+}/Zn} = -0.76\,V]$

Redox Reactions

Solution:

Since a metal with lower electrode potential is a stronger reducing agent. $Mg$ can displace all the given metals, Al can displace all metals except $Mg$. $Zn$ can displace all metals except $Mg$ and $Al$. $Fe$ can displace only $Cu$. The order in which they can displace each other from their salt solutions is $Mg$, $Al$, $Zn$, $Fe$, $Cu$.