Potentiometric titration of iron(II) ions

VC3.5.1.3

Titration curve of iron(II) ions

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Description

In experiment C3.5.1.3, a potentiometric titration is performed in order to measure the concentration of iron(II) ions. In the process, the iron(II) ions are oxidised with potassium permanganate.

The change in the potential of the solution during the titration corresponds here to the change in pH in an acid-base titration.

Components of equipment sets

1	524005W2	Mobile-CASSY 2 WiFi
1	524220 4	CASSY Lab 2
1	5240672 4	pH adapter S
1	667416 8	Single-rod redox probe BNC
1	6677991	Analytical balance, 220 g : 0.0001 g
1	607105 8	Magnetic stirrer mini
1	664103 4	Beaker, DURAN, 250 ml, squat
1	30042 4	Stand rod, 47 cm, 12 mm diam.
1	30002 4	Stand base, V-shaped, small
2	665792 4	Volumetric flask, Boro 3.3, 50 ml
1	665997 4	Graduated pipette 10 ml
1	666003 4	Pipetting ball (Peleus ball)
1	665845 4	Burette side stopcock, 25 ml
1	665816 4	Burette filling funnel plastic, 35 mm Ø
1	666559 8	Burette clamp for 1 burette, roller clamp
1	666543 4	Double, crossed boss head, 0...16 mm
1	666555 4	Universal clamp 0...80 mm
1	6719100 4	Iron(II) sulfate-7-hydrate, 100 g Warning H302 H315 H319
1	6727000 4	Potassium permanganate, 100 g Danger H272 H302 H410
1	6747920 4	Sulfuric acid, diluted, approx. 2 N (= 10 %), 500 ml Warning H290 H315 H319
1	6721100 4	D(+)-Glucose, 100 g
1		additionally required: PC with Windows 7 or higher with WIFI or USB connection

Experiment Instructions

PDF (Experiment description)

C3.5.1.3 Potentiometric titration of iron(II) ions (de)

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Potentiometric titration of iron(II) ions

Description

Components of equipment sets

Experiment Instructions

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