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Ion transport in liquids

VC4.4.1.1
Ion transport in liquids
Ion transport in liquids

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Description

Conductivity relies on the migration of ions in the electric field. Anions (negative) migrate to the positive pole, cations (positive) migrate to the negative pole. In experiment C4.4.1.1, this migration is observed directly. The coloured anion permanganate (MnO4-) and the coloured cation copper tetraammine (Cu(NH3)42+) are used for this purpose. In this way, the direction of migration and the magnitude of the speed can be determined.

Components of equipment sets

1 664091 Double U-tube, 160 mm, with 2 G4 filters LD
2 6643691 Rod electrode platinum sheet LD
1 6644071  8  Electrochemistry demonstration unit, CPS LD
1 500411  4  Connecting lead, 19 A, 25 cm, red LD
1 500412  4  Connecting lead, 19 A, 25 cm, blue LD
1 666425  4  Panel frame C50, two-level, for CPS LD
1 666472  4  Table for electrochemistry, CPS LD
2 59121  4  Clip plug, large LD
1 667255  4  Rubber stopper, solid, 16...21 mm diam. LD
1 664243  8  Erlenmeyer flask 250 ml, narrow neck, SB 29 LD
1 665754  4  Measuring cylinder 100 ml, with plastic base LD
1 602022  4  Beaker Boro 3.3, 100 ml, squat LD
1 664130  4  Beaker, Boro 3.3, 250 ml, squat LD
1 664133  4  Beaker, Boro3.3, 1000 ml, squat LD
1 665217  4  Glass stirring rod, 500 mm x 8 mm diam., set of 10 LD
1 6045682  4  Powder spatula, steel, 185 mm LD
1 ADAHCB602H Precision Balance, 600 g /0,01g, with USB interface LD
1 6704900  4  Ammonium sulfate, 250 g LD
1 6727000  4  Potassium permanganate, 100 g LD
GHS03GHS07GHS09 Danger H272 H302 H410
1 6729600  4  Copper(II) sulfate-5-hydrate, 100 g LD
GHS09GHS05GHS07 Danger H302 H318 H400 H410
1 6703650  4  Ammonia solution, diluted, 2 mol/l, 500 ml LD
GHS05 Danger H315 H318
1 6753500  4  Hydrogen peroxide, 30 %, 250 ml LD
GHS05GHS07 Danger H302 H318
1 6753400  4  Water, pure, 1 l LD
1 665004  4  Funnel, Boro 3.3, 80 mm diam. LD
1 666584  4  Filtration stand for two funnels LD
1 661066  4  Folded filter LD

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) C4.4.1.1 Ion transport in liquids
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