Technical data

Osmosis - dependence of the osmotic pressure on the concentration

Article no: P1135700

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Principle

Osmosis describes the phenomenon that solvent molecules move through a partially permeable membrane into a region of higher solute concentration. Thus, the concentration of solute is equalized on both sides. The experimental set-up consists of seven chambers that are filled with solutions of sugar with different concentrations. The liquid column in the capillaries is determined and the dependence of the osmotic pressure on the concentration can easily be shown.

Benefits

Quantitative determination of the osmosis processes
Multiple measurement points permit detailed analysis
Scalable experiment: number of measurement points can be varied

Tasks

Investigate the phenomenom of osmosis in a simple model experiment.
Determine the dependence of osmotic pressure on concentration of dissolved molecules.

Learning objectives

Osmosis
Osmotic pressure
Concentration

Scope of delivery

Filtration stand for 2 funnels	33401-88	1
Stand rods, stainless steel, various sizes	02037-00	2
Stand rods, stainless steel, various sizes	02033-00	1
Right angle boss-head clamp	37697-00	2
Osmosis and electrochemistry chamber	35821-00	1
Supplement chamber for osmosis / electro chemistry	35821-10	5
Capillary tube,i.d. 1.5mm,l 450mm	05939-00	7
Glass tube holder with tape measure clamp	05961-00	7
Scale 350 mm	64840-00	7
Beakers, Boro, high form, various sizes	46027-00	1
Spoon, special steel	33398-00	1
Wash bottle, plastic, 500 ml	33931-00	1
Glass rod,boro 3.3,l=300mm, d=7mm	40485-05	3
Funnels (glass), Boro, various sizes	34457-00	1
Scissors, straight, 180 mm	64798-00	1
Cellophane, 300x200 mm,	32987-00	1
Precision Balance, Sartorius, 620 g : 1 mg	49311-99	1
Copper-II sulphate,cryst. 250 g	30126-25	1
D(+)-glucose 1-hydr. 250 g	30237-25	1