Q. For cell reaction, $Zn\ + \ {Cu}^{2 +}\ \longrightarrow \ {Zn}^{2 +} + \ Cu$ Cell representation is
A) $Zn\ |\ {Zn}^{2 +}\ ||\ {Cu}^{2 +}\ |\ Cu$
B) $Cu\ |\ {Cu}^{2 +}\ ||\ {Zn}^{2 +}\ |\ Zn$
C) $Cu\ |\ {Zn}^{2 +}\ ||\ Zn\ |\ {Cu}^{2 +}$
D) ${Cu}^{2 +}\ |\ Zn\ ||\ {Zn}^{2 +}\ |\ Cu$
Explanation
(a)
Cell representation is done as follows
Anode | Anodic electrolyte || cathodic electrolyte | cathode
(i) Oxidation is loss of electron and it takes place at anode. Reduction is gain of electron and it takes place at cathode.
∴ For cell reaction,
$Zn\ + \ {Cu}^{2 +}\ \longrightarrow \ {Zn}^{2 +} + \ Cu$
Zn is anode and Cu is cathode.
∴ Cell representation is
$Zn\ |\ {Zn}^{2 +}\ ||\ {Cu}^{2 +}\ |\ Cu$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.