Copper refining

Copper refining
Copper refining

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Raw copper contains traces of other elements. These can be removed via electrolysis. To do so, raw copper is electrolysed in a copper sulfate solution. The raw copper is used as the anode. Here, the ignoble elements and copper will dissolve. At the cathode (also made from copper), pure copper is deposited.

In this experiment, the copper refinement is conducted using a brass electrode (copper, "contaminated" by sinc).

Components of equipment sets

1 6644071  8  Electrochemistry demonstration unit, CPS LD
1 666425  4  Panel frame C50, two-level, for CPS LD
1 666472  4  Table for electrochemistry, CPS LD
1 664401  4  Electrochemistry accessories set LD
1 664130  4  Beaker, Boro 3.3, 250 ml, squat LD
1 664131  4  Beaker Boro 3.3, 400 ml, squat LD
1 665754  4  Measuring cylinder 100 ml, with plastic base LD
1 6677991 Analytical balance, 210 g : 0,0001 g LD
1 666714  8  Cartridge burner, DIN type LD
GHS02 Warning H220
1 602783  8  Glass rod, 200 mm, diam. 6 mm LD
1 6659531  4  Dropping pipette 150 mm x 7 mm Ø LD
1 6659541  8  Rubber bulb LD
1 666584  4  Filtration stand for two funnels LD
1 665005  4  Funnel, Boro 3.3, 100 mm diam. LD
1 609082  4  Folded filter 125mmØ Typ: 595 LD
1 6729600  4  Copper(II) sulfate-5-hydrate, 100 g LD
GHS07GHS09 H302 H319 H315 H410
1 6747850  4  Sulfuric acid, 95-98 %, 250 ml LD
GHS05 H314 H290
1 6738400  4  Sodium hydroxide solution, diluted, aprox. 2 M, 500 ml LD
GHS05 H314 H290
1 6753400  4  Water, pure, 1 l LD

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) C5.1.2.3 Copper refining
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