1.

What is the Nernst formula of calculate reduction potential of non standard electrode of Zn|Zn^(2+) ?

Answer»

`E_(ZN^(2+)|Zn)=E_(Zn^(2+)|Zn)^(Theta)-(0.059)/(2)log[Zn^(2+)]`
`E_(Zn^(2+)|Zn)=E_(Zn^(2+)|Zn)^(Theta)-(0.059)/(2)log[(1)/(Zn^(2+))]`
`E_(Zn^(2+)|Zn)=E_(Zn^(2+)|Zn)^(Theta)+(0.059)/(n)log[Zn^(2+)]`
`E_(Zn^(2+)|Zn)=E_(Zn^(2+)|Zn)^(Theta)+(0.059)/(2)log[Zn^(2+)]`

Solution :e.g., `Zn+Cu^(2+) to Zn^(2+)+Cu_((S)) and Zn|Zn^(2+)` is oxidation.
In which Zn is reactant and `Zn^(2+)` is a PRODUCT. And n=2.
`therefore KAPPA (["Product"])/(["Reactant"])=([Zn^(2+)])/(Zn)=[Zn^(2+)]`
`E_(Zn^(2+)|Zn)=E_(Zn^(2+)|Zn)^(Theta)-(0.059)/(2)log[Zn^(2+)]`


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