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Predict whether Ag^(+) can oxidize Pb to...

Predict whether `Ag^(+)` can oxidize Pb to `Pb^(2+)` under standard state conditions.
`E_(Ag)^(@)=0.799V and E_(Pb)^(@)=-0.126V`.

Text Solution

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(a) (i) Since the standard reduction potential of Ag under standard conditions is higher `(E_(Ag^(+)//Ag)=0.799V)` than that of `Pb(E_(Pb^(2+)//Pb)^(@)=-0.126V), Ag^(+)` have higher tendency to gain electrons than Pb.
(ii) Hence `Ag^(+)` acts as a stronger oxidising agent and oxidises Pb to `Pb^(2+)` while `Ag^(+)` gets reduced to Ag.
The redox reaction will be, `Pb_((s))+2Ag_((aq))^(+) rarr Pb_((aq))^(2+)+2Ag_((s))`
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