write my assignment 2320

Write titration of unknown iron sample with permanganate – KMnO4

Fe2+ →  5Fe3+ + e–

MnO4– + 8H+ +5e–  →  Mn2+ + 4H2O

MnO4– (aq) + 8H+ (aq)+5Fe2+ (aq) →  Mn2+ (aq) + 4H2O (l) + 5Fe3+ (aq)

Use the balanced equation and average titration volume of the titration of the unknown sample to find the mass of iron in the sample (Fe 55.85 g/mol and % of iron in the unknown sample

Average titration volume: 2,55 mL