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Detection of iron ions

Detection of iron ions

LC1.5.2.4

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Description

The students detect iron³⁺ ions with potassium ferricyanide (II) (yellow blood leach salt) by characteristic precipitation reactions. The detections are performed as a negative blind test with water, as a positive blind test with iron(III) chloride solution and as a detection from an analytical substance, in this case cigarette ash. This produces the dark blue, colloidal "Berlin Blue".

Components of equipment sets

1	30109 4	Bosshead S
2	6659541 8	Dropper bulb
1	6045682 4	Powder spatula, steel, 185 mm
1	667057 4	Test tube rack metal, 20 mm Ø
1	661035 8	Round filter, Type 595, 125 mm Ø, Set of 100
1	30121 8	Stand base MF
2	301271 4	Stand rod 40 cm, 10 mm Ø
1	30123 4	Stand feet, pair
2	6659531 4	Dropping pipette 150 mm x 7 mm Ø
1	666555 4	Universal clamp 0...80 mm
1	30945 4	Universal pencil
4	6640421 4	Test tube Fiolax 16 mm x 160 mm
3	667253 4	Rubber stopper solid, 14...18 mm Ø
1	665009 4	Funnel PP 75 mm Ø
1	610010 8	Laboratory safety goggles
1	6718700 4	Iron(III) chloride-6-hydrate, 50 g Danger H302 H315 H318
1	6726000 4	Potassium ferrocyanide (II), 50 g H412
1	6746920 4	Hydrochloric acid, approx. 2 mol/l, 500ml Warning H290
1	6753410 4	Water, pure, 5 l

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Detection of iron ions

Description

Components of equipment sets

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