Question

Standard electrode potential of cell $H_2|H^{+}||A{g}^{+}|Ag$ is

• A. $1.2V$
• B. $-0.8V$
• C. $-1.2V$
• D. $0.8V$

Answer 1

Answer: (D)

$\frac{1}{2}{H}_2|H+||A{g}^{+}|Ag|$
$E_{cell}^o=E_{cathode}^{°}-E_{anode}^{°}=E_{A{g}^{+}/Ag}^{°}-E_{H^{+}/\frac{1}{2}{H}_{[}2}^{°}$
$(0.80)-(0.0)=0.80V$