1.

The standard electrode potentials E^(@) for the half cell reactions are as :ZntoZn^(2+)+2e^(-),E^(@)=0.76VFetoFe^(2+)+2e^(-),E^(@)=041VThe EMF of the cell reaction Fe^(2+)+ZntoZn^(2+)+Feis :

Answer»

`Zn_((aq))^(+2)+2Ag_((s))to2Ag_((aq))^(+)+Zn_((s))`
`Zn_((s))+2Ag_((aq))^(+)toZn_((aq))^(+2)+2Ag_((s))`
`Az_((aq))^(2+)+Ag_((aq))^(+)toZn_((s))+Ag_((s))`
`Az_((s))+Ag_((s))toZn_((aq))^(+2)+Ag_((aq))^(+)`

Solution :`Zn_((s))+2Ag_((aq))^(+)toZn_((aq))^(+2)+2Ag_((s))`
EMF for EQ. (2) is +ve, and hence the RELATION is
`Zn_((s))+2Ag_((aq))^(+)toZn_((aq))^(+2)+2Ag_((s))`.


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