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 `volt
B. `0.80 ` volt
C. `1.08` volt
D. `0.94` volt

Answer 1

Correct Answer - 4
`E_(cell)=E_(cell)^(@)-(0.0591)/(2)log.([Zn^(2+)])/([Ag^(+)]^(2))" "=0.8-(-0.14)-(0.0591)/(2)log.(1)/(1^(2))=0.94V.`