Q. The standard electrode potentials of ${Ag}^{+}\ /\ Ag$ is +0.80 V and ${Cu}^{+}\ /Cu$ is +0.34 V. These electrodes are connected through Asalt bridge and if
A) Copper electrode acts as Acathode then $E_{cell}^{{^\circ}}$ is +0.46 V
B) Silver electrode acts as anode then $E_{cell}^{{^\circ}}$ is -0.34 V
C) Copper electrode acts as anode then $E_{cell}^{{^\circ}}$ is +0.46 V
D) Silver electrode acts as Acathode then $E_{cell}^{{^\circ}}$ is -0.34 V
Explanation
(c)
$E_{cell}^{{^\circ}} = \ E_{cathode}^{{^\circ}}\ - \ \ E_{anode}^{{^\circ}}$
$E_{{Ag}^{+}\ /Ag}^{{^\circ}}\ - \ E_{{Cu}^{+}\ /Cu}^{{^\circ}}$
= - 0.80 – 0.34
= + 0.46
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.