Write titration of unknown iron sample with permanganate - KMnO 4 Fe 2+ 5Fe 3+ + e - MnO 4 - + 8H + +5e - Mn 2+ + 4H 2 O MnO 4 - (aq) + 8H + (aq)+5Fe...

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