1.

For the following cell, Zn(s)|ZnSO_(4)(aq)||CuSO_(4)(aq)|Cu(s) When the concentration of Zn^(2+) is 10 times the concentration of Cu^(2+), the expression for DeltaG ( in Jmol^(-1)) is [F is faraday constant: R is gas constant, T is temperature, E^(@)(cell)=1.1V]

Answer»

2.303RT+1.1F
1.1F
2.303RT-2.2F
`-2.2F`

Solution :`DeltaG=DeltaG^(o)+2.303RTlog_(10)Q,Q=([Zn^(2+)])/([Cu^(2+)])`
`=-2F(1.1)+2.303RTlog_(10)10`
`=2.303RT-2.2F`
GIVEN
`E_(Cl_(2)//Cl^(-))^(o)=1.36V,E_(Cr^(3+)//Cr)^(o)=-0.74V`
`E_(Cr_(2)O_(7)^(2-)//Cr_(3+))^(o)=1.33V,E_(MnO_(4)^(-))^(o)//Mn^(2+)=1.51V`


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