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Electrolytic water decomposition according to Hoffmann

VC1.3.1.1_p
Electrolytic water decomposition according to Hoffmann
Electrolytic water decomposition according to Hoffmann

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Description

In experiment C1.3.1.1, water is analyzed by electrolysis in the Hoffmann voltameter. The transformation of electrical energy into chemical energy is demonstrated at the same time. First the gases generated - hydrogen and oxygen - can be determined qualitatively. Quantitative assessment of the quantities of gas generated can then be used to derive the chemical formula for the compound water.

Components of equipment sets

1 666446 Electrolysis apparatus, CPS LD
1 666425 Panel frame C50, two-level, for CPS LD
1 521546 DC Power Supply 0...16 V/0...5 A LD
1 500441 Connecting lead 19 A, 100 cm, red LD
1 500442 Connecting lead 19 A, 100 cm, blue LD
1 602953  4  Measuring cylinder, Boro 3.3, 100 ml, glass base LD
1 665008  4  Funnel, PP, 50 mm diam. LD
1 602004  8  Test tubes, DURAN, 20 x 180 mm, set of 100 LD
1 656017 Teclu burner, universal LD
1 607020 Safety gas hose, 0.5 m LD
1 666731  4  Gas igniter, mechanical LD
1 661083 Wooden turnings, 10 pieces LD
1 6747920 Sulfuric acid, diluted, approx. 2 N (= 10 %), 500 ml LD

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) C1.3.1.1 Electrolytic water decomposition according to Hoffmann
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Chemistry
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