Manganometric determination of iron(II) ions

VC3.5.3.2
Manganometric determination of iron(II) ions
Manganometric determination of iron(II) ions Titration curve of a redox titration
Manganometric determination of iron(II) ions

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Description

Manganometry requires no redox indicator because a potassium manganate solution is used as a reference solution. It has a deep violet colour and serves as an oxidising agent. In experiment C3.5.3.2, an iron(II) solution is titrated with a potassium permanganate solution.

The endpoint is reached when the solution retains a constant violet colour. At the same time, a redox electrode is used to measure the potential of the solution.

Components of equipment sets

1 524005W  8  Mobile-CASSY 2 WiFi LD
1 524220  8  CASSY Lab 2 LD
1 5240672  8  pH adapter S LD
1 667416  4  Single-rod redox probe BNC LD
1 6677977 Electronic Balance 440-3N, 200 g : 0.01 g LD
1 607105  8  Magnetic stirrer mini LD
2 664103  4  Beaker, DURAN, 250 ml, squat LD
1 30042  4  Stand rod, 47 cm, 12 mm diam. LD
1 30002  4  Stand base, V-shaped, small LD
1 665997  4  Graduated pipette 10 ml LD
1 666003 Pipetting ball (Peleus ball) LD
1 665845  4  Burette, clear glass, 25 ml LD
1 665816  4  Burette filling funnel plastic, 35 mm Ø LD
1 666559  4  Burette clamp for 1 burette, roller clamp LD
1 666543  4  Double, crossed boss head, 0...16 mm LD
1 666555  4  Universal clamp 0...80 mm LD
1 6719100  4  Iron(II) sulfate-7-hydrate, 100 g LD
GHS07 Warning H302 H315 H319
1 6727000  4  Potassium permanganate, 100 g LD
GHS03GHS07GHS09 Danger H272 H302 H410
1 6747920  4  Sulfuric acid, diluted, approx. 2 N (= 10 %), 500 ml LD
GHS05 Warning H290 H315 H319
1 6744670  4  Buffer solution pH 7.00, 250 ml LD
1 6746900  4  * Hydrochloric acid, 1 mol/l, 500 ml LD
GHS05 Warning H290
1 6753500  4  * Hydrogen peroxide, 30 %, 250 ml LD
GHS05GHS07 Danger H302 H318
1 additionally required: PC with Windows 7 or higher with WIFI or USB connection

Articles marked with * are not essential, we do however recommend them to carry out the experiment.

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) C3.5.3.2 Manganometric determination of iron(II) ions
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