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Consider the following E^(@) values E^(@...

Consider the following `E^(@)` values `E^(@)` values `E_(Fe^(3+)//Fe^(2+))^(@)= 0.77v` , `E_(Sn^(2+)//Sn)^(@) = -0.14` under standard condition the potential for the reaction `Sn_(s)+ 2Fe^(3+)(aq)rightarrow 2Fe^(2+)(aq) + Sn^(2+) (aq)` is :

A

`1.68V`

B

`0.63V`

C

`0.91V`

D

`1.40V`

Text Solution

Verified by Experts

The correct Answer is:
C
`E_("cell")^(@)=E_(Fe^(3+)//Fe^(3+))-E_(Sn^(2+) //Sn)^(@)`
`=0.77-(-0.14)=0.91V`
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