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The Faraday laws

The Faraday laws

VC4.4.5.3

The Faraday laws

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Description

In 1833 Michael Faraday described the laws of electrolysis. He showed that there is a quantitative relationship between the amount of charge and the conversion of a chemical reaction at the electrode during electrolysis.

In this experiment, the Faraday laws are to be checked by electrolysis of aqueous zinc iodide solution and the Faraday constant F is to be determined. Zinc iodide is used because the products zinc and iodine can be quantitatively detected by weighing or by titration.

Components of equipment sets

1	6644071 8	Electrochemistry demonstration unit, CPS
1	666425 4	Panel frame C50, two-level, for CPS
1	666472 4	Table for electrochemistry, CPS
1	664401 4	Electrochemistry accessories set
1	6029750 4	Burette straight cock, 10 ml
1	665816 4	Burette filling funnel plastic, 35 mm Ø
1	666559 8	Burette clamp for 1 burette, roller clamp
1	30042 4	Stand rod, 47 cm, 12 mm diam.
1	30002 4	Stand base, V-shaped, small
1	602022 4	Beaker Boro 3.3, 100 ml, squat
1	664132 4	Beaker, Boro3.3, 600 ml, squat
1	665793 4	Volumetric flask, Boro 3.3, 100 ml
1	665795 4	Volumetric flask, Boro 3.3, 500 ml
1	665754 4	Measuring cylinder 100 ml, with plastic base
1	6045662	Spatula, double ended, 210 mm
1	6677991	Analytical balance, 220 g : 0.0001 g
1	666584 4	Filtration stand for two funnels
1	665005 4	Funnel, Boro 3.3, 100 mm diam.
1	609082 4	Folded filter 125mmØ Typ: 595
1	6755220 4	Zinc iodide solution, 50 %, 50 g Danger H314 H410
1	6738000 4	Sodium thiosulfate-5-hydrate, 100 g
1	6747920 4	Sulfuric acid, diluted, approx. 2 N (= 10 %), 500 ml Warning H290 H315 H319
1	6749220 4	Starch, soluble, 50 g
1	6753400 4	Water, pure, 1 l
1	661242 4	Wash bottle, PE, 250 ml

Experiment Instructions

PDF (Experiment description)

C4.4.5.3 The Faraday laws

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The Faraday laws

Description

Components of equipment sets

Experiment Instructions

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