1.

Predict whether the reaction 2Ag_((s))+Zn_((aq))^(2+)rarr 2Ag_((aq))^(+)+Zn_((s)) is feasible or not.

Answer»

Solution :The cell half REACTIONS are
`{:("Anode",:,2Ag_((s))rarr2Ag_((AQ))^(+)+2e^(-),E^(@)=0.80V),("Cathode",:,Zn_((aq))^(+)+2e^(-)rarrZn_((s)),E^(@)=-0.763V):}`
`E_("cell")^(@)=E_("cathode")^(@)-E_("anode")^(@)`
`E_("cell")^(@)=-0.763V-0.80V`
`=-.1563V`
Since `E_("cell")^(@)`is NEGATIVE, the given reaction is not feasible.


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