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Conditions for iron corrosion

Conditions for iron corrosion

VC1.5.3.1

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Description

Experiment C1.5.3.1 examines the conditions under which ferrous metals corrode. Wads of iron wool are subjected to different conditions. In one test tube, boiled water is poured over the iron wool, in the second test tube the iron wool is left dry, and the third test tube is rinsed with tap water so that droplets remain in the tube. This test tube is connected to an immersion tube manometer filled with coloured water. The changes in the iron wool and the changes in the immersion tube manometer are observed. It can be seen that under the simultaneous action of water and oxygen on iron, corrosion forms and a measurable negative pressure builds up in the apparatus.

Components of equipment sets

1	665936	Immersion tube manometer, after Schiele
1	667054 8	Test tube rack, for 12 tubes, 32 mm diam.
1	664045 4	Test tubes, Fiolax, 30 x 200 mm, set of 10
1	665232 8	Angled tube 90°, 50/50 mm, 8 mm Ø
1	667261 4	Rubber stopper, one 7-mm hole, 25...31 mm Ø
1	667180 4	Rubber tubing Ø 7 mm, t = 1,5 mm, l = 1m
2	30002 4	Stand base, V-shaped, small
2	30128 8	Stand rod, 450 x 10 Ø mm
2	30109 4	Bosshead S
2	666555 4	Universal clamp 0...80 mm
1	664183 4	Petri dish, 100 x 20 mm, glass
1	6670344 4	Tweezer, blunt, 145 mm
1	664130 4	Beaker, Boro 3.3, 250 ml, squat
1	666767 8	Hotplate, 1500 W, 185 mm Ø
1	666962 4	Spatula, double ended, 150 mm
1	6718410 4	Iron wool, 200 g
1	6708200 4	Petroleum ether, 90...110 °C, 250 ml Danger H225 H304 H315 H336 H411
1	30942 4	Colouring, red, 10 g
1	6721200 4	Glycerol, 99 %, 100 ml
1		additionally required: tap water, mineral water

Experiment Instructions

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C1.5.3.1 Conditions for iron corrosion

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Conditions for iron corrosion

Description

Components of equipment sets

Experiment Instructions

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