Question

Which one of the following will increase the voltage of the cell ? (T = 298 K)

$\text{Sn + 2A}\text{g}^{+}\overset{\quad\quad}{\rightarrow}\text{ S}\text{n}^{\text{2+}}\text{ + 2Ag}$

• A. Increase in the size of silver rod
• B. Increase in the concentration of Sn+2 ions
• C. Increase in the concentration of Ag+ ions
• D. None of the above

Answer 1

Answer: (C)

Increase in the concentration of Ag+ ions

Answer 2

$Ecell = E^{0}cell - \frac{0.059}{2}\log\frac{\left\lbrack Sn^{2 +} \right\rbrack}{\left\lbrack Ag^{+} \right\rbrack^{2}}Ag^{+}$

increase, Ecell increase.