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E^(@) values of some redox couples are g...

`E^(@)` values of some redox couples are given below on the basic of these values choose the correct option option
`E^(@)` values : `Br_(2)/Br^(-)=1.09`
`Ag^(+)//Ag(s)=+0.80,Cu^(2+)//Cu(s)=+0.34`
`I_(2)(s)//(I)^(-)=+0.54`

Text Solution

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Copper will reduce `Br_(2)` if the `E^(@)` of the redox reactoin `2Cu +Br_(2)rarr CuBr_(2)` is +ve
`Cu rarrCu^(2+)+2e^(-),E^(@)=-0.34V`
`Br_(2)+2e^(-)rarr2 Br^(-), E^(@)=+1.09 V`
`Cu+Br_(2)rarrCuBr_(2), E^(@)=+0.75 V`
Since `E^(@)` of this reaction is +ve therefore Cu can reduce `Br_(2)` and henc eoption (d) is correct
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