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Calculate the standard Gibbs energy for ...

Calculate the standard Gibbs energy for the cell :
`Zn(s)|Zn^(2+)(aq)||Cd^(2+)(aq)|Cd(s)`
`E_((Zn^(2+)//Zn))^(@)=-0.76V,E_((Cd^(2+)//Cd))^(@)=-0.403V,F=96500C`.

Text Solution

Verified by Experts

Fro the given cell, cell reaction can be written as `Zn + Cd^(2+) rarr Zn^(+2) + Cd`
Standard emf of the given cell,
`E_(Cell)^(@) = E_("Cathode")^(@) - E_("anode")^(@) or E_(RHS)^(@) - E_(LHS)^(@)`
`= E_(Cd^(2+)//Cd)^(@) - E_(Zn^(2+)//Zn)^(@) = - 0.403 - (-0.763) = 0.763 - 0.403 = + 0.360 V`
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