The Briggs Rauscher Reaction

VC4.1.4.1

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Description

The Briggs-Rauscher reaction is a prototype of an oscillating reaction. An oscillating reaction fluctuates between different states. In the Briggs-Rauscher reaction, the solution is initially colorless or slightly yellow and later turns deep blue. The blue color is due to the iodine-starch complex, which is formed by iodide ions. As soon as these ions disappear during the complex reaction cycle, the solution becomes colorless again. In the experiment, the Briggs-Rauscher reaction is built up and followed.

Components of equipment sets

1	524069 4	Immersion photometer S
1	667416 8	Single-rod redox probe BNC
1	5240672 4	pH adapter S
1	524005W2	Mobile-CASSY 2 WiFi
1	666839 4	Magnetic stirrer with hotplate
2	666851 4	Stirring magnet, 25 mm x 6 mm Ø, circular
1	664114 4	Beaker, DURAN, 400 ml, tall
4	664103 4	Beaker, DURAN, 250 ml, squat
1	665754 4	Measuring cylinder 100 ml, with plastic base
1	6677967	Compact Balance EMB200-2
4	6045682 4	Powder spatula, steel, 185 mm
1	665212 4	Glass stirring rod 200 x 8 mm Ø
1	30945 4	Universal pencil
1	665994 4	Graduated pipette 1 ml
1	666003 4	Pipetting ball (Peleus ball)
1	666523 4	Stand rod, 450 x 12 mm diam., M10 thread
2	30109 4	Bosshead S
2	666555 4	Universal clamp 0...80 mm
1	6753400 4	Water, pure, 1 l
1	6753500 4	Hydrogen peroxide, 30 %, 250 ml Danger H302 H318
1	6726500 4	Potassium iodate, 25 g Danger H272 H318
1	6747850 4	Sulfuric acid, 95-98 %, 250 ml Danger H314 H290
1	6732300 4	Manganese(II) sulfate, 50 g Warning H373 H411
1	6731800 4	Malonic acid, 50 g Warning H302 H319
1	6749200 4	Starch, soluble, 100 g

Experiment Instructions

PDF (Experiment description)

C4.1.4.1 The Briggs Rauscher Reaction

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The Briggs Rauscher Reaction

Description

Components of equipment sets

Experiment Instructions

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