1.

The standard reduction potential for Fe^(2+)//Fe and Sn^(2+)//Sn electrode are -0.44 and -0.14 volt respectively. For the givencell reaction Fe^(2+)+SntoFe+Sn^(2+), the standard EMF is:-

Answer»

`+0.30V`
`-0.58V`
`+0.58V`
`-0.30V`

Solution :For the cell reaction, FE acts as cathode as Sn as ANODE. Hence,
`E_(cell)^(o)=E_(cathode)^(o)-E_("anode")^(o)=-0.44-(-0.14)=-0.30V`
the NEGATIVE EMF suggests that the reaction goes spontaneously in reverse DIRECTION.


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