Which one of the following will increase the voltage of the cell ? `(T = 298 K)`
` Sn+ 2Ag^+ rarr Sn^(2+) +2 Ag`.

Options

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

B

Explanation

`E = E^(Theta) - (0.059)/(2) "log" ([Sn^(2+)])/([Ag^(+)]^(2))`
Increase in conc., of `Sn^(2+)` will decrease E .