Question

Calculate the cell potential for the galvanic cell in which the given reaction occurs at 25 °C, given that [Cd2+]=0.00190 M and [Au3+]=0.788 M . Standard reduction potentials can be found in this table. 3Cd(s)+2Au3+(aq)↽−−⇀3Cd2+(aq)+2Au(s)

Answer 1

For a [Cd2+]=0.00190 M and [Au3+]=0.788 M conc, the cell potential  is mathematically given as

Ecell=1.98V

What is the cell potential for the galvanic cell?

Generally, the equation for the  Chemical reaction is mathematically given as

Cd2+(aq) + 2e – → Cd(s)

Au3+(aq) + 3e– → Au(s)

Therefore

Ecell=Ecell-0,0582/nlog

Therefore

Ecell=Ered-Eoxy

Ecell=1.498-(-0.403)

Ecell=1.901

In conclusion

Ecell=1,901-0,0592/6log(0,0016/0.88)^2

Ecell=1.98V

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