Chapter 19, Problem 19.164MP

Consider the redox titration of 100.0 mL of a solution of $0.010{\text{ M Fe}}^{\text{2+}}$ in 1.50 M ${\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}$ with a 0.010 M solution of KMnO₄, yielding ${\text{Fe}}^{\text{3+}}$ and ${\text{Mn}}^{\text{2+}}$ . The titration is carried out in an electrochemical cell equipped with a platinum electrode and a calomel reference electrode consisting of an Hg₂Cl₂/Hg electrode in contact with a saturated KCI solution having ${\text{[Cl}}^{\text{-}}]=2.9\text{M}$ . Using any data in Append ixes C and D, calculate the cell potential after addition of (a) 5.0 mL, (b) 10.0 mL, (c) 19.0 mL, and (d) 21.0 mL of the KMnO₄ solution.