Electrolytic water decomposition according to Hoffmann

VC1.3.1.1_p
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  8  Panel frame C50, two-level, for CPS LD
1 521546 DC Power Supply 0...16 V/0...5 A LD
1 50146  4  Connecting leads 19 A, 100 cm, red/blue, pair 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 Test tubes, DURAN, 20 x 180 mm, set of 100 LD
1 656017  4  Teclu burner, universal LD
1 607020  4  Safety gas hose with clamp 0.5 m LD
1 666731  4  Gas igniter, mechanical LD
1 661083  4  Wooden turnings, 10 pieces LD
1 6747920  4  Sulfuric acid, diluted, approx. 2 N (= 10 %), 500 ml LD
GHS05 Warning H290 H315 H319

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) C1.3.1.1 Electrolytic water decomposition according to Hoffmann, CPS version
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