1) For its reduction reaction, hydrogen has a kinetic overvoiltage of -0.09V on Pt and - 1.04V on mercury at low current density. For its reduction...

1) For its reduction reaction, hydrogen has a kinetic overvoiltage of -0.09V on Pt and -1.04V on mercury at low current density. For its reduction Co has no kinetic overvoltageon either material. In a solution containing 0.10M Co+2 at pH 1.0, will the cobalt metal orhydrogen gas be the primary product when the cathode isa) Hgb) PtCo+2 + 2e = Co(s) E0 = - 0.2272) Compute E0 for the process Ni(CN)42- + 2e = Ni(s) + 4CNGiventhat the formation constant for the complex is 1.0x10223) Suppose that we wish to produce a current of 0.0750A in the cellPt|V3+(3.7x10-5 M), V2+(4.48x10-1 M)||Br-(0.0850M), AgBr(sat􀂶d)/AgAs a result of its design, the cell has an internal resistance of 4.87 W. Calculate the initialpotential of the cell.4) The following cell was used for the determination of pCrO4:SCE||CrO42-(xM),Ag2CrO4(sat􀂶d)|AgCalculate pCrO4 if the cell potential is -0.386 V.5) Calculate the minimum difference in standard electrode potentials needed to lower theconcentration of the metal M 1 to 2.0x10-4M in a solution that is 1.0x10-1 M in the lessreduciblemetal M2 wherea) M2 is univalent and M 1 is divalentb) M2 and M 1 are both divalentc) M2 is trivalent and M 1 is univalentd) M2 is divalent and M 1 is univalente) M2 is divalent and M2 is trivalent6) A 0.0809g sample of a purified organic acid was dissolved in an alcohol-water mixtureand titrated with coulometrically generated hydroxide ion. With a current of 0.0441 A,266 s was required to reach a phenolphthalein end point. Calculate the equivalent mass ofthe acid.