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

Consider the following ` E^@` values . `E_(Fe^(3+)//Fe^(2+)^@ = + 0.77 V`,
`E_(Sn^(2+)//Sn)^@=- 15. V` The `E_(cell)^@` for the reaction ,
`Sn (s) + 2Fe_(aq)^(3+) rarr 2 Fe_(aq.)^(2+) + Sn_(aq.)^(2+) is :

A

`0.63 V`

B

`1.40 V`

C

`0.91 V`

D

`1.68 V`

Text Solution

Verified by Experts

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