Question

The standard electrode potentials of $A{{g}^{+}}/Ag$ is $+0.80\text{ }V$ and $C{{u}^{+}}/Cu$ is $+0.34\text{ }V$ . These electrodes are connected through a salt bridge and if:

• A. copper electrode acts as a cathode then $E{}^\circ$ cell is $+0.46\text{ }V$
• B. silver electrode acts as anode then $E{}^\circ$ cell is $-0.34\text{ }V$
• C. copper electrode acts as anode then $E{}^\circ$ cell is $+0.46V$
• D. silver electrode acts as a cathode then $E{}^\circ$ cell is $-0.34\text{ }V$

Answer 1

Answer: (C)

copper electrode acts as anode then $E{}^\circ$ cell is $+0.46V$

Answer 2

$E_{cell}^{o}=E_{cathode}^{o}-E_{anode}^{o}$
$=E_{A{{g}^{+}}/Ag}^{o}-E_{C{{u}^{+}}/Cu}^{o}$
$=-0.80-0.34$
$=+0.46$