Question

What will be the emf of the following concentration cell at $25^{\circ}C$? $Ag_{\left(s\right)}\left|AgNO_{3}\left(0.01\,M\right)\right|\left|AgNO_{3}\left(0.05\,M\right)\right|Ag_{\left(s\right)}$

• A. $0.828\,V$
• B. $0.0413\, V$
• C. $-0.0413\, V$
• D. $-0.828\,V$

Answer 1

Answer: (B)

$0.0413\, V$

Answer 2

$E=E^{\circ}-\frac{0.0591}{n}log\,Q$ $E^{\circ}=0$ for all concentration cells $=0-\frac{0.0591}{1} log \left(\frac{0.01}{0.05}\right)$ $=0.0413\,V$