The law of conservation of mass in chemical reactions

Item No. P1134300 | Type: Experiments

20 Minutes

10 Minutes

grades 7-10

heavy

Teachers/Professors

EUR 6,427.30

Content 1 piece

EUR 7,648.49 Incl. VAT

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

Device name

Item No.

Quantity

Retort stand, h = 750 mm

Item No. 37694-00

1

Support base DEMO

Item No. 02007-55

1

Stand rods, stainless steel, various sizes | Length: 600 mm

Item No. 02037-00

2

Right angle boss-head clamp

Item No. 37697-00

4

Universal clamp

Item No. 37715-01

4

Combustion tube, 300 mm, quartz, ns

Item No. 33948-01

1

Connecting tube IGJ 19/26-GL 18/8

Item No. 35678-01

2

Stopcock,3-way,t-shaped, glass

Item No. 36731-00

1

Gasometer 1000 ml

Item No. 40461-00

2

Clamp f.ground joint,plastic,NS19

Item No. 43614-00

2

Teflon sleeve IGJ 19, 10 pcs

Item No. 43616-00

1

Glass tube,right-angled,.

Item No. MAU-10030703

1

Glass tube, straight, l=80 mm, 10/pkg.

Item No. MAU-16074541

1

Porcelain boats, 10 pcs

Item No. 32471-03

1

Weather monitor, 6 lines LCD

Item No. 87997-10

1

Reaction vessel, landolt, SB 19

Item No. 36811-00

1

Flat-bottom flask, stopper bed, 250 mlSB 29

Item No. MAU-SK17083400

1

Rubber stoppers, without bore, various diameters | diameter: 17 mm

Item No. 39255-00

2

Rubber stopper 26/32, 3 holes, 1 x 7 mm + 2 x 1,5 mm

Item No. 39258-14

1

Nozzle for glass screwthread

Item No. 43903-01

1

Crystallising dishes, Boro, various sizes | diameter: 125 mm

Item No. 46244-00

1

Test tube, laboratory glass, various lengths | Length: 160 mm

Item No. 37656-10

1

Test tube rack, wood, for 6 tubes d= 22mm

Item No. MAU-20042200

1

Nickel electrode,d 3mm,w.socket

Item No. 45231-00

2

Steel cylinder oxygen, 2 l, filled

Item No. 41778-00

1

Table stand for 2 l steel cylinders

Item No. 41774-00

1

Reducing valve f.oxygen

Item No. 33482-00

1

Wrench for steel cylinders

Item No. 40322-00

1

PHYWE Power supply, universal, analog display DC: 18 V, 5 A / AC: 15 V, 5 A

Item No. 13503-93

1

Connecting cable, 32 A, red, various lengths | Length: 500 mm

Item No. 07361-01

1

Connecting cable, 32 A, blue, various lengths | Length: 500 mm

Item No. 07361-04

1

Teclu burner, DIN, natural gas

Item No. 32171-05

1

Safety gas tubing, DVGW, sold by metre

Item No. 39281-10

1

Hose clip f.12-20 diameter tube

Item No. 40995-00

2

Lighter f.natural/liquified gases

Item No. 38874-00

1

Precision Balance, Sartorius, 620 g : 1 mg

Item No. 49311-99

1

Tweezers,straight,blunt, 200 mm

Item No. 40955-00

1

Crucible tongs, 200 mm, stainless steel

Item No. 33600-00

1

Spoon, special steel

Item No. 33398-00

1

Rubber hose, various diameters | diameter: 6 mm

Item No. 39282-00

2

Petroleum ether, 40-60 °C, 500 ml

Item No. 30184-50

1

Iron wool 200 g

Item No. 31999-20

1

Copper, powder 100 g

Item No. 30119-10

1

Sodium carbonate 10-hydr. 500 g

Item No. 48309-50

1

Calcium chloride 6-hyrdr. 1000 g

Item No. 48020-70

1

Water, distilled 5 l

Item No. 31246-81

1

Sea sand, purified 1000 g

Item No. 30220-67

1

Name

Filename

Filesize

Filetyp

(de) Versuchsbeschreibung

p1134300_de .pdf

Filesize 1.31 Mb

pdf

(en) Versuchsbeschreibung

p1134300_en .pdf

Filesize 1.26 Mb

pdf

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