Question

The standard electrode potential for the reactions,
`Ag^(+)(aq)+e^(-) rarr Ag(s)`
`Sn^(2+)(aq)+2e^(-) rarr Sn(s)`
at `25^(@)C` are `0.80 ` volt and `-0.14 ` volt, respectively. The `emf`of the cell `Sn|Sn^(2+)(1M)||Ag^(+)(1M)Ag` is `:`
A. `0.66` V
B. 0.80 V
C. 0.94 V
D. 1.08 V

Answer 1

Correct Answer - A
`E_(cell)^(@) = E_(RP_(Ag))^(@) - E_(RP_(Sn))^(@)`
`= 0.80 - (-0.14) = 0.94` V