Principle
The reduction, as the reversal of the oxidation, can be achieved thermally or with the aid of a reducing agent.
Some metal oxides can be decomposed into the metal and oxygen under the influence of thermal energy. In the case of less noble metals, a reducing agent is required for obtaining the elements. The redox processes during the preparation of lead demonstrate the relationship between oxidation and reduction.
By way of this experiment it can be shown that during the reduction of an oxide the reducing agent itself is oxidised: hydrogen to water, carbon to carbon dioxide. A reduction process is always coupled with an oxidation process, which is why this type of reaction is referred to as a redox reaction.
Benefits
- Practical gas bar for storing the gases
- Stable and safe setup due to solid stand material
Tasks
- Reduction of lead(IV) oxide to lead(II) oxide by thermolysis.
- Reduction of lead(II) oxide by way of charcoal to obtain elementary lead.
- Reduction of iron oxide including the formation of hydrogen based on pyrophoric iron.
What you can learn about
- Reduction
- Oxidation
- Redox reaction
- Lead
- Iron
- Thermolysis
Scope of Supply
Device Name | Item no. | Qty |
---|
Beaker, Borosilicate, tall form, 600 ml | 46029-00 | 1,00 |
Circular filter,d 125 mm,100 pcs | 32977-05 | 1,00 |
Wood splints, package of 100 | 39126-10 | 1,00 |
Calcium hydroxide 500 | 30054-50 | 1,00 |
Pinchcock, width 15 mm | 43631-15 | 1,00 |
Gas bar | 40466-00 | 1,00 |
Universal clamp | 37715-00 | 2,00 |
Connecting tube IGJ 19/26-GL 18/8 | 35678-01 | 2,00 |
Teclu burner, DIN, natural gas | 32171-05 | 1,00 |
Support base DEMO | 02007-55 | 1,00 |
Steel cylinder hydrogen, 2 l, full | 41775-00 | 1,00 |
Safety gas tubing, DVGW, sold by metre | 39281-10 | 1,00 |
Glass tube, straight, l=80 mm, 10/pkg. | 36701-65 | 1,00 |
Spoon, special steel | 33398-00 | 1,00 |
Charcoal powder 250 | 30087-25 | 1,00 |
Beaker, Borosilicate, tall form, 100 ml | 46026-00 | 1,00 |
Tweezers,straight,blunt, 200 mm | 40955-00 | 1,00 |
Lighter f.natural/liquified gases | 38874-00 | 1,00 |
Test tube,180x20 mm, PN1 | 36293-00 | 1,00 |
Porcelain boats, 10 pcs | 32471-03 | 1,00 |
Support rod, stainless steel, l = 600 mm, d = 10 mm | 02037-00 | 2,00 |
Clamp f.ground joint,plastic,NS19 | 43614-00 | 2,00 |
Rubber tubing, i.d. 6 mm | 39282-00 | 2,00 |
Test tube, 160 x 16 mm, 100 pcs | 37656-10 | 1,00 |
Reducing valve for hydrogen | 33484-00 | 1,00 |
Lead-IV oxide -lead diox.- 250 g | 31122-25 | 1,00 |
Hose clip f.12-20 diameter tube | 40995-00 | 2,00 |
Protective desk plate 40 x 40 cm | 39180-10 | 1,00 |
Glass tube,right-angled w.tip,10 | 36701-53 | 1,00 |
Porcelain dish 140ml, d 100mm | 32518-00 | 1,00 |
Magnet, d = 10 mm, l = 200 mm | 06311-00 | 1,00 |
Teflon sleeve IGJ 19, 10 pcs | 43616-00 | 1,00 |
Wrench for steel cylinders | 40322-00 | 1,00 |
Right angle boss-head clamp | 37697-00 | 2,00 |
Combustion tube, 300 mm, quartz, ns | 33948-01 | 1,00 |
Scissors, straight,180 mm | 64798-00 | 1,00 |
Table stand for 2 l steel cylinders | 41774-00 | 1,00 |
Rubber stopper, d = 22/17 mm, 1 hole | 39255-01 | 2,00 |
Glass tubes,right-angled, 10 | 36701-59 | 1,00 |
Water, distilled 5 l | 31246-81 | 1,00 |
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