Question

From the standard potentials Tl+ +e- ↔ Tl(s)                     E+0 = -0.336 V TlCl(s) + e- ↔ Tl(s)...

From the standard potentials

Tl+ +e- ↔ Tl(s)                     E+0 = -0.336 V

TlCl(s) + e- ↔ Tl(s) +Cl-       E-0 = -0.557 V

calculate the solubility product constant of TlCl. Assume the activity of chloride ion of exactly 1.00. Report the answer to the correct number of significant figures.

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Answer #1

Eocell = Eored - Eooxodation

           = - 0.557 - (- 0.336)

            = - 0.221 V

delta Go = - n F Eocell

             = - 1 x 96485 x - 0.221

             = 21.323 kJ/mol

delta Go = - RT ln Ksp

21.323 = - 8.314 x 10^-3 x 298 x ln Ksp

Ksp = 1.83 x 10^-4

solubility product constant of TlCl = 1.83 x 10^-4

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