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Technical data

Electrolytic deposition and quantity of electricity (Faraday's first law)

Item No. P1147501

Principle

During an electrolysis reaction, the deposited mass m of a substance is directly proportional to the flow of charge (First Faraday's law). The second Faraday law states that the electrochemical equivalents k (deposited mass per charge unit) behave like the equivalent masses (molar mass M divided by the valency z) of the elements. Both laws can be confirmed experimentally by water decomposition using an apparatus according to Hofmann.

 

Learning objectives

  • Faraday law
  • Water decomposion by electrolysis
  • Calculation of deposited mass during an electrolysis

Scope of supply

Water decomposition apparatus according to Hoffmann, incl. tripod MAU-25014002 1
Right angle boss-head clamp 37697-00 2
Universal clamp 37715-01 2
PHYWE Power supply, universal, analog display DC: 18 V, 5 A / AC: 15 V, 5 A 13503-93 1
PHYWE Demo Multimeter ADM 3: current, voltage, resistance, temperature 13840-00 2
Connecting cable, 32 A, red, various lengths 07362-01 2
Connecting cable, 32 A, blue, various lengths 07362-04 3
Stop clock, demo.; diam. 13 cm 03075-00 1
Volumetric flasks, Boro, various sizes 36552-00 1
Wash bottle, plastic, 500 ml 33931-00 1
Glass rod,boro 3.3,l=300mm, d=7mm 40485-05 1
Pasteur pipettes, 250 pcs 36590-00 1
Rubber caps, 10 pcs 39275-03 1
Funnels (glass), Boro, various sizes 34457-00 1
Water, distilled 5 l 31246-81 1
Sulphuric acid,0.5M 1000 ml 48462-70 1
Weather monitor, 6 lines LCD 87997-10 1
 
PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10 – 37079 Göttingen – Germany
www.phywe.com
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