Technical data

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

Article no: P1147501

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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 delivery

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
Sulphuric acid,0.5M 1000 ml	48462-70	1
Weather monitor with big display	87997-10	1