solve 3 please I.- Determine the Eo cell, the AG and the Equilibrium constant fo

Question

solve 3 please

I.- Determine the Eo cell, the AG and the Equilibrium constant for the following reaction in standard conditions. Express if the battery is spontaneous. Ni (s)+ Fes Reduction: Fe+3 izi + 1e-??Fe.2(aa) Eore.-0.77 volts Reduction Ni+2(aq) + 2e-? Ni (s) Eored -0.25 volts E° cell= 2.- For the previous reaction determine the Cell potential if the [Fe]-0.02 M, [Fe]-0.01 M [NI- 0.04 M and express is the battery is spontaneous E° cell Spontaneity Yes No Go= Spontaneity Yes No 3.-a.- Determine the Mercury solubility at room temperature in Mercury() Sulfate. Mercury solubility Sulfate is dissolved

Explanation / Answer

3)   mercury(I)sulfate = Hg2SO4

its Ksp = 6.5 x 10^-7

    Hg2SO4 <------------------------> 2Hg+ + SO42-

                                                     2S             S

Ksp   = [Hg+]^2 [SO42-]

Ksp = (2S)^2 (S)

Ksp = 4S^3

6.5 x 10^-7 = 4 S^3

S = 5.46 x 10^-3 M

mercury solubility = 2 S

                             = 2 x 5.46 x 10^-3 M

                              = 0.0109 M

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