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Technical data


The law of conservation of mass in chemical reactions

Article no: P1134300

Principle

This experiment confirms the law of conservation of mass by the precipitation of calcium carbonate in the vessel according to Landolt. For this experiment two solutions with the starting material  are filled separately into two limbs of a vessel.  Afer that the vessel is sealed and weighed. To confirm the law of conservation ot mass both solutions are mixed together and a precipitation reaction can be observed. By weighing the vessel again, students realize that there is no change in the mass.

 

Learning objectives

  • Law of conservation of mass
  • Precipitation reaction
  • Landolt vessel

 

Scope of delivery

Retort stand, h = 750 mm 37694-00 1
Support base DEMO 02007-55 1
Stand rods, stainless steel, various sizes 02037-00 2
Right angle boss-head clamp 37697-00 4
Universal clamp 37715-01 4
Combustion tube, 300 mm, quartz, ns 33948-01 1
Connecting tube IGJ 19/26-GL 18/8 35678-01 2
Stopcock,3-way,t-shaped, glass 36731-00 1
Gasometer 1000 ml 40461-00 2
Clamp f.ground joint,plastic,NS19 43614-00 2
Teflon sleeve IGJ 19, 10 pcs 43616-00 1
Glass tube,right-angled,. MAU-10030703 1
Glass tube, straight, l=80 mm, 10/pkg. MAU-16074541 1
Porcelain boats, 10 pcs 32471-03 1
Weather monitor with big display 87997-10 1
Reaction vessel, landolt, SB 19 36811-00 1
Flat-bottom flask, stopper bed, 250 mlSB 29 MAU-SK17083400 1
Rubber stoppers, without bore, various diameters 39255-00 2
Rubber stopper 26/32, 3 holes, 1 x 7 mm + 2 x 1,5 mm 39258-14 1
Nozzle for glass screwthread 43903-01 1
Crystallising dishes, Boro, various sizes 46244-00 1
Test tube, laboratory glass, various lengths, 100 pcs. 37656-10 1
Test tube rack, wood, for 6 tubes d= 22mm MAU-20042200 1
Nickel electrode,d 3mm,w.socket 45231-00 2
Steel cylinder oxygen, 2 l, filled 41778-00 1
Table stand for 2 l steel cylinders 41774-00 1
Reducing valve f.oxygen 33482-00 1
Wrench for steel cylinders 40322-00 1
PHYWE Power supply, universal, analog display DC: 18 V, 5 A / AC: 15 V, 5 A 13503-93 1
Connecting cable, 32 A, red, various lengths 07361-01 1
Connecting cable, 32 A, blue, various lengths 07361-04 1
Teclu burner, DIN, natural gas 32171-05 1
Safety gas tubing, DVGW, sold by metre 39281-10 1
Hose clip f.12-20 diameter tube 40995-00 2
Lighter f.natural/liquified gases 38874-00 1
Precision Balance, Sartorius, 620 g : 1 mg 49311-99 1
Tweezers,straight,blunt, 200 mm 40955-00 1
Crucible tongs, 200 mm, stainless steel 33600-00 1
Spoon, special steel 33398-00 1
Rubber hose, various diameters 39282-00 2
Petroleum ether, 40-60 °C, 500 ml 30184-50 1
Iron wool 200 g 31999-20 1
Copper, powder 100 g 30119-10 1
Sodium carbonate 10-hydr. 500 g 48309-50 1
Calcium chloride 6-hyrdr. 1000 g 48020-70 1
Water, distilled 5 l 31246-81 1
Sea sand, purified 1000 g 30220-67 1

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