Detection of iron ions

LC1.5.2.4
Detection of iron ions
Detection of iron ions

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".

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1 30109  4 
Bosshead S LD
2 6659541  8 
Rubber bulb LD
1 6045682  4 
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1 667057  4 
Test tube rack metal, 20 mm Ø LD
1 661035  8 
Round filter, Type 595, 125 mm Ø, Set of 100 LD
1 30121  8 
Stand base MF LD
2 301271  4 
Stand rod 40 cm, 10 mm Ø LD
1 30123  4 
Stand feet, pair LD
2 6659531  4 
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1 666555  4 
Universal clamp 0...80 mm LD
1 30945  4 
Universal pencil LD
4 6640421  4 
Test tube Fiolax 16 mm x 160 mm LD
3 667253  4 
Rubber stopper solid, 14...18 mm Ø LD
1 665009  4 
Funnel PP 75 mm Ø LD
1 610010  8 
Laboratory safety goggles LD
1 6718700  4 
Iron(III) chloride-6-hydrate, 50 g LD
GHS05GHS07 Danger H302 H315 H318
1 6726000  4 
Potassium ferrocyanide (II), 50 g LD
H412
1 6746920  4 
Hydrochloric acid, approx. 2 mol/l, 500ml LD
GHS05 Warning H290
1 6753410  4 
Water, pure, 5 l LD
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