The standard reduction potential for `Fe^(2+) //Fe` and `Sn^(2+) //Sn` electrodes are `-0.44` and `-0.14 ` volt respectively. For the given cell reaction `Fe^(2+) + Sn rarr Fe + Sn^(2+) `, the standard ` EMF` is.A. `+.030v`B. `-0.58v`C. `+0.58v`D. `-0.300`

The standard reduction potential for `Fe^(2+) //Fe` and `Sn^(2+) //Sn`

1.	The standard reduction potential for `Fe^(2+) //Fe` and `Sn^(2+) //Sn` electrodes are `-0.44` and `-0.14 ` volt respectively. For the given cell reaction `Fe^(2+) + Sn rarr Fe + Sn^(2+) `, the standard ` EMF` is.A. `+.030v`B. `-0.58v`C. `+0.58v`D. `-0.300`
Answer» Correct Answer - D The two half cell reactions are `SnrarrSn^(2+)+2e^ (-)` `Fe^(2+)+2e^(-)rarrFe` `therefore` cell representation is `Sn\|Sn^(2+)\|\|Fe^(2+)\|Fe` `E_("cell")^(@)=E_(Fe^(2+)//Fe)^(@)-E_(Sn^(2+)//Sn)^(@)` `=-0.44V-(-0.14V)=0.30V`

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The standard reduction potential for `Fe^(2+) //Fe` and `Sn^(2+) //Sn` electrodes are `-0.44` and `-0.14 ` volt respectively. For the given cell reaction `Fe^(2+) + Sn rarr Fe + Sn^(2+) `, the standard ` EMF` is.A. `+.030v`B. `-0.58v`C. `+0.58v`D. `-0.300`

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