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Calculate the standard cell potentials a...

Calculate the standard cell potentials at `25^(@)C` for the electrochemical cells, `Zn | Zn^(2+)||` reference half-cell and reference half-cell `||Cu^(2+)| Cu`, where the reference half-cell is,
(i) SHE
(ii) Ag` //` AgCl electrode.

Text Solution

Verified by Experts

The correct Answer is:
(i) 0.76 V, 0.34V (ii) 0.98V, 0.12V
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The standard cell potential for the cell is , Zn|Zn^(2+)(1M)||Cu^(2+)(1M)|Cu [E^@ for Zn^(2+)//Zn=-0.76V, E^@ for Cu^(2+)//Cu=+0.34V]

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Knowledge Check

  • The standard cell potential for the cell is , Zn|Zn^(2+)(1M)||Cu^(2+)(1M)|Cu [E^@ for Zn^(2+)//Zn=-0.76V, E^@ for Cu^(2+)//Cu=+0.34V]

    A
    `-0.76+0.34=-0.42V`
    B
    `-0.34-(-0.76)=+0.42V`
    C
    `0.34-(-0.76)=+1.10V`
    D
    `-0.76-(+.34)=-1.10V`

  • The standard cell potential for the cell is , Zn|Zn^(2+)(1M)||Cu^(2+)(1M)|Cu[E^@ for Zn^(2+)//Zn=-0.76,E^@forCu^(2+)//Cu=+0.34]

    A
    `-0.76+0.34=-0.42V`
    B
    `-0.34-(-0.76)=+0.42V`
    C
    `0.34-(-0.76)=+1.10V`
    D
    `-0.76-(+.34)=-1.10V`